Oral Pathology - Immunity
Quiz on immunity
Questions and Answers
- 1.
The immune system defends the body against foreign substances that are called
- A.
Plasma cells
- B.
Antibodies
- C.
Antigens
- D.
Lymphocytes
Correct Answer
C. AntigensExplanation
The immune system defends the body against foreign substances called antigens. Antigens are molecules or particles that can stimulate an immune response, leading to the production of antibodies. These antibodies are produced by plasma cells, which are a type of lymphocyte. Therefore, while plasma cells and antibodies are involved in the immune response, they are not the substances that the immune system defends against. The immune system recognizes and targets antigens to protect the body from potential harm.Rate this question:
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- 2.
Memory is an important function of the immune system because
- A.
It retains memory of the antibody
- B.
It allows faster future immune responses
- C.
Like inflammation it remembers the antigen
- D.
It weakens future immune responses
Correct Answer
B. It allows faster future immune responsesExplanation
The memory function of the immune system allows for faster future immune responses. This is because the immune system retains memory of the antibody, which means that it can recognize and respond more quickly to a previously encountered antigen. This memory allows the immune system to mount a more efficient and effective immune response, leading to faster clearance of pathogens and a stronger defense against future infections.Rate this question:
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- 3.
Immunization with a vaccine works by
- A.
Increasing the risk of an antigen causing disease
- B.
Using antibodies produced by another person
- C.
Passing antibodies from the mother to the fetus
- D.
Producing active acquired immunity
Correct Answer
D. Producing active acquired immunityExplanation
Immunization with a vaccine works by producing active acquired immunity. This means that the vaccine stimulates the immune system to produce an immune response, including the production of antibodies, against a specific antigen. This helps the body recognize and fight off the antigen if it is encountered in the future, providing protection against the disease it causes.Rate this question:
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- 4.
A B lymphocyte is a cell in the immune system that is
- A.
Derived from a precursor stem cell
- B.
Matured and then reside in the thymus
- C.
Produced from plasma cells
- D.
Active in foreign substance surveillance
Correct Answer
A. Derived from a precursor stem cellExplanation
B lymphocytes are a type of white blood cell that play a crucial role in the immune system. They are derived from precursor stem cells, which means that they originate from undifferentiated cells that have the potential to develop into various types of cells. These precursor stem cells undergo a process of maturation and differentiation to become B lymphocytes. Once matured, B lymphocytes do not reside in the thymus, but rather circulate throughout the body and reside in lymphoid tissues such as the spleen and lymph nodes. B lymphocytes are active in foreign substance surveillance, as they produce antibodies that can recognize and neutralize pathogens or foreign substances in the body.Rate this question:
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- 5.
A macrophage is a cell in the immune system that
- A.
Retains the memory of the encountered antigen
- B.
Serves as a link between the inflammatory and repair process
- C.
Undergoes B cell phagocytosis initially during inflammation
- D.
Can be activated by lymphokines
Correct Answer
D. Can be activated by lymphokinesExplanation
Macrophages are immune cells that play a crucial role in the immune response. They can be activated by lymphokines, which are signaling molecules released by other immune cells. Activation of macrophages by lymphokines enhances their ability to engulf and destroy pathogens, produce inflammatory mediators, and present antigens to other immune cells. This activation is important for the coordination and regulation of the immune response.Rate this question:
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- 6.
Which statement is TRUE of antural killer cells?
- A.
NK cells do not circulate
- B.
NK cells secrete antibodies
- C.
NK cells can recognize antigen
- D.
NK cells do not have memory
Correct Answer
D. NK cells do not have memoryExplanation
Natural Killer (NK) cells are a type of lymphocyte that plays a crucial role in the innate immune response. Unlike adaptive immune cells, such as B and T cells, NK cells do not possess memory. This means that NK cells do not retain information about previous encounters with specific antigens. Instead, they rely on their ability to recognize and eliminate infected or abnormal cells through a process called "target cell killing". Therefore, the statement "NK cells do not have memory" is true.Rate this question:
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- 7.
The cells of the body are no longer tolerated and the immune system treats them as antigens in which type of immune system treats them as antigens in which type of immunopathologic disease
- A.
Hypersensitivity
- B.
Immunodeficiency
- C.
Hyperplasia
- D.
Autoimmune disease
Correct Answer
D. Autoimmune diseaseExplanation
In an autoimmune disease, the cells of the body are no longer tolerated by the immune system and are treated as antigens. This means that the immune system mistakenly identifies the body's own cells as foreign and launches an immune response against them. This can lead to inflammation and damage to various organs and tissues in the body. Hypersensitivity refers to an exaggerated immune response to an allergen, immunodeficiency is a weakened immune system, and hyperplasia refers to abnormal cell growth.Rate this question:
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- 8.
During anaphylactic type of hypersensitivity reaction, the plasma cells
- A.
Produce antibody called IgE
- B.
React with lymphocytes
- C.
Combine antigen
- D.
Form immune complexes
Correct Answer
A. Produce antibody called IgEExplanation
During an anaphylactic type of hypersensitivity reaction, plasma cells produce an antibody called IgE. IgE antibodies are involved in allergic reactions and bind to specific receptors on mast cells and basophils. When the allergen reenters the body, it binds to the IgE antibodies on these cells, triggering the release of histamine and other chemicals that cause inflammation and allergic symptoms. This explanation highlights the role of IgE antibodies in the immune response during anaphylactic hypersensitivity reactions.Rate this question:
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- 9.
What type of hypersensitivityreaction involves activated complement?
- A.
Type 1
- B.
Type 2
- C.
Type 3
- D.
Type 4
Correct Answer
B. Type 2Explanation
Type 2 hypersensitivity reactions involve activated complement. In these reactions, IgG or IgM antibodies bind to antigens on the surface of cells, leading to activation of the complement system. This activation results in the recruitment of immune cells and the destruction of the target cells through various mechanisms, such as complement-mediated lysis or antibody-dependent cell-mediated cytotoxicity. Examples of type 2 hypersensitivity reactions include autoimmune hemolytic anemia, transfusion reactions, and some drug allergies.Rate this question:
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- 10.
What type of lymphocyte matures in the thymus produces lymphokines and can increase or suppress the humoral immune response?
- A.
B cell
- B.
Plasma cell
- C.
T cell
- D.
Macrophage
Correct Answer
C. T cellExplanation
T cells are a type of lymphocyte that mature in the thymus. They are responsible for producing lymphokines, which are signaling molecules that help regulate the immune response. T cells can both increase and suppress the humoral immune response, depending on the specific situation. B cells, plasma cells, and macrophages are also important components of the immune system, but they do not have the same role as T cells in terms of maturing in the thymus and producing lymphokines.Rate this question:
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- 11.
In the immune system antibodies are proteins that are
- A.
Also termed immunoglobins
- B.
Directly produced from lymphocytes
- C.
Produced in response to other antibodies
- D.
Directly produced from mast cells
Correct Answer
A. Also termed immunoglobinsExplanation
Antibodies, also known as immunoglobulins, are proteins that are an essential component of the immune system. They are produced by lymphocytes, a type of white blood cell, in response to the presence of foreign substances in the body. Antibodies play a crucial role in identifying and neutralizing these foreign substances, such as bacteria or viruses, by binding to them and marking them for destruction by other immune cells. Therefore, the correct answer is "also termed immunoglobins" as it accurately describes the alternative name for antibodies.Rate this question:
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- 12.
Which immunopathology involves a decreased number or activity of lymphoid cells?
- A.
Autoimmunity
- B.
Hypersensitivity
- C.
Immunodeficiency
- D.
Immunization
Correct Answer
C. ImmunodeficiencyExplanation
Immunodeficiency involves a decreased number or activity of lymphoid cells, leading to a weakened immune system. This condition can be congenital or acquired, and it makes individuals more susceptible to infections and diseases. Unlike autoimmunity, which is an overactive immune response against the body's own cells, immunodeficiency is characterized by a compromised immune system. Hypersensitivity refers to an exaggerated immune response, while immunization is the process of inducing immunity against a specific pathogen through vaccination.Rate this question:
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- 13.
The humoral immune response involves the production of
- A.
Antigens
- B.
Antibodies
- C.
Autoimmune cells
- D.
Toxins
Correct Answer
B. AntibodiesExplanation
The humoral immune response involves the production of antibodies. Antibodies are proteins produced by B cells in response to the presence of antigens. These antigens can be foreign substances such as bacteria or viruses. Antibodies bind to antigens and help in their neutralization or destruction. They can also activate other components of the immune system to eliminate the antigens. Therefore, antibodies play a crucial role in the humoral immune response by specifically targeting and eliminating foreign substances in the body.Rate this question:
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- 14.
Measurement of a specific antibody level in the blood is called
- A.
Phagocytosis
- B.
Margination
- C.
Titer
- D.
Pavementing
Correct Answer
C. TiterExplanation
The correct answer is "titer" because it refers to the measurement of a specific antibody level in the blood. Titer is a quantitative measurement that determines the concentration of antibodies present in a sample. It is commonly used in diagnostic tests to assess the immune response to a particular infection or vaccination. Titer levels can indicate the strength of an immune response and help in determining the effectiveness of treatments or vaccines.Rate this question:
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- 15.
Which type of immunity may be immediately provided to dental personnel following needlestick accidents?
- A.
Natural passive immunity
- B.
Acquired passive immunity
- C.
Natural active immunity
- D.
Acquired active immunity
Correct Answer
B. Acquired passive immunityExplanation
Following a needlestick accident, dental personnel may immediately receive acquired passive immunity. This type of immunity occurs when pre-formed antibodies are transferred from one individual to another. In this case, the dental personnel may receive antibodies through a medical intervention, such as receiving immune globulin or specific antibodies, to provide immediate protection against any potential pathogens that may have been introduced through the needlestick accident. This acquired passive immunity is temporary and does not provide long-term protection.Rate this question:
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- 16.
All of the following are examples of hypersensitivity reactions except
- A.
Lichen planus
- B.
Urticaria
- C.
Angioedema
- D.
Contact mucositosis
Correct Answer
A. Lichen planusExplanation
Hypersensitivity reactions refer to exaggerated immune responses to certain substances. Lichen planus is not considered a hypersensitivity reaction but rather an inflammatory skin condition. Urticaria, angioedema, and contact mucositosis are all examples of hypersensitivity reactions.Rate this question:
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- 17.
Reiter's syndrome is
- A.
An infectious disorder
- B.
An automatic response
- C.
An immunologic disorder
- D.
More common in women than in men
Correct Answer
C. An immunologic disorderExplanation
Reiter's syndrome is an immunologic disorder. This condition is characterized by inflammation in various parts of the body, including the joints, eyes, and urinary tract. It is believed to be triggered by an infection, typically a bacterial infection in the gastrointestinal or urogenital tract. The immune system's response to the infection leads to the development of Reiter's syndrome. It can affect both men and women, but it is more commonly observed in men.Rate this question:
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- 18.
The "target lesion" on the skin is associated with which disease
- A.
Behcet syndrome
- B.
Systemic lupus erythematosus
- C.
Lichen planus
- D.
Erythema multiforme
Correct Answer
D. Erythema multiformeExplanation
Erythema multiforme is associated with the appearance of a "target lesion" on the skin. This skin condition is characterized by the presence of distinctive concentric rings of color, giving the lesion a target-like appearance. Behcet syndrome, systemic lupus erythematosus, and lichen planus do not typically present with this specific target lesion. Therefore, erythema multiforme is the most likely disease associated with the given description.Rate this question:
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- 19.
Tzanck cells are sen in which condition?
- A.
Pemphigus vulgaris
- B.
Erythema multiforme
- C.
Systemic lupus erythematosus
- D.
Behcet's syndrome
Correct Answer
A. Pemphigus vulgarisExplanation
Tzanck cells are seen in pemphigus vulgaris. Tzanck cells are multinucleated giant cells that are formed due to the fusion of keratinocytes in the skin. They are typically found in the blister fluid or in the base of the vesicles in pemphigus vulgaris. Pemphigus vulgaris is an autoimmune blistering disorder that affects the skin and mucous membranes. It is characterized by the formation of intraepidermal blisters and the presence of autoantibodies against desmoglein 3, a protein involved in cell adhesion.Rate this question:
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- 20.
The oral lesion in reiter's syndrome may resemble
- A.
Nicotine stomatitis
- B.
Lichen planus
- C.
Angioedema
- D.
Geographic tongue
Correct Answer
D. Geographic tongueExplanation
In Reiter's syndrome, the oral lesion may resemble geographic tongue. Geographic tongue is a benign condition characterized by irregular, map-like patches on the surface of the tongue. These patches are caused by the loss of papillae, giving the tongue a smooth appearance in certain areas. This condition is typically asymptomatic and does not require treatment. In Reiter's syndrome, the oral lesion may appear similar to geographic tongue due to inflammation and the presence of irregular patches on the tongue. However, it is important to note that Reiter's syndrome is a systemic condition that affects multiple organs, whereas geographic tongue is a localized oral condition.Rate this question:
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- 21.
Which systemic disease is NOT associated ith ahpthous ulcers?
- A.
Behcet syndrome
- B.
Histocytosis X
- C.
Ulcerative colitis
- D.
Crohn's disease
Correct Answer
B. Histocytosis XExplanation
Histocytosis X is not associated with aphthous ulcers. Aphthous ulcers are recurrent painful sores that can occur in the mouth, and they are commonly seen in conditions such as Behcet syndrome, ulcerative colitis, and Crohn's disease. However, there is no known association between histocytosis X and aphthous ulcers.Rate this question:
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- 22.
The two cells tha thistologically characterize Langerhans cell disease are
- A.
Lymphocytes and plasma cells
- B.
Fibroblasts and lymphocystes
- C.
Eosinophils and mononuclear cells
- D.
Neutrophils and lymphocytes
Correct Answer
C. Eosinophils and mononuclear cellsExplanation
The correct answer is eosinophils and mononuclear cells. Langerhans cell disease is a rare disorder characterized by the abnormal accumulation of Langerhans cells, a type of immune cell, in various tissues. These cells are histologically characterized by the presence of eosinophils, which are a type of white blood cell involved in allergic reactions and immune responses, and mononuclear cells, which are a type of immune cell with a single nucleus. These two cell types are commonly seen in Langerhans cell disease and can help distinguish it from other conditions.Rate this question:
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- 23.
Which one of the following is the form of langerhans cell disease that is characterized by a triad of symptoms?
- A.
Letterer-siwe disease
- B.
Hand-schuller-christian disease
- C.
Eosinophilic granuloma
- D.
Behcet's syndrome
Correct Answer
B. Hand-schuller-christian diseaseExplanation
Hand-Schuller-Christian disease is a form of Langerhans cell disease that is characterized by a triad of symptoms. This triad includes exophthalmos (protrusion of the eyeballs), diabetes insipidus (excessive thirst and urination), and osteolytic lesions (destruction of bone tissue). This disease primarily affects children and is caused by the proliferation of Langerhans cells, a type of immune cell, in various organs of the body.Rate this question:
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- 24.
The most benign type of histiocytosis X disease is
- A.
Hand-schuller-christian disease
- B.
Eosinophilic granuloma
- C.
Letterer-siwe disease
- D.
Chronic disseminated reticulosis
Correct Answer
B. Eosinophilic granulomaExplanation
Eosinophilic granuloma is the most benign type of histiocytosis X disease. This condition is characterized by the abnormal proliferation of a type of white blood cell called histiocytes. Eosinophilic granuloma typically affects children and young adults, causing bone lesions that can lead to pain and swelling. However, it generally has a good prognosis and does not usually spread to other organs. Hand-Schuller-Christian disease and Letterer-Siwe disease are more severe forms of histiocytosis X, while chronic disseminated reticulosis is a different condition altogether.Rate this question:
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- 25.
The most significant oral manifestation of sjorgen's sydrome is
- A.
Leukoplakia
- B.
Geographic tongue
- C.
Erthema multiforme
- D.
Xerostomia
Correct Answer
D. XerostomiaExplanation
Xerostomia refers to the condition of having a dry mouth, which is the most significant oral manifestation of Sjogren's syndrome. Sjogren's syndrome is an autoimmune disorder that primarily affects the salivary glands, causing reduced saliva production. This can lead to various oral symptoms, including dryness, difficulty in swallowing and speaking, increased risk of dental decay and oral infections. Therefore, xerostomia is the correct answer as it accurately represents the main oral manifestation associated with Sjogren's syndrome.Rate this question:
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- 26.
Which statement is false?
- A.
The bullae of pemphigus culgaris are more fragile than those o bullouw pemphigoid
- B.
Acantholysis of the epithelium is seen in pemphigus vulgaris
- C.
In pemphigoid the separation of the epithelium from the connective tissue occurs in the area of the basement membrane
- D.
Skin lesions are common in cicatrical pemphigoid
Correct Answer
D. Skin lesions are common in cicatrical pemphigoidExplanation
The statement "skin lesions are common in cicatrical pemphigoid" is false. Cicatricial pemphigoid, also known as mucous membrane pemphigoid, primarily affects mucous membranes such as the mouth, eyes, nose, throat, and genitals. It typically does not involve the skin. Skin involvement is more commonly seen in other forms of pemphigoid, such as bullous pemphigoid.Rate this question:
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- 27.
Which is the most distinct and definitive charactristic that distinguishes pemphigus from pemphigoid?
- A.
Size of the ulcerations
- B.
Age and sex of the patient
- C.
The histologic findings
- D.
Amount of keratosis seen in both
Correct Answer
C. The histologic findingsExplanation
The most distinct and definitive characteristic that distinguishes pemphigus from pemphigoid is the histologic findings. Histologic findings refer to the examination of tissue samples under a microscope to identify specific cellular changes or patterns. In pemphigus, the histologic findings typically show acantholysis, which is the loss of intercellular connections between skin cells. In pemphigoid, the histologic findings usually show subepidermal blistering, which is the separation of the top layer of the skin from the underlying layers. These histologic findings are crucial in accurately diagnosing and differentiating between pemphigus and pemphigoid.Rate this question:
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- 28.
Desquamative gingivitis may be seen in
- A.
Cicatrical pemphigoid
- B.
Pemphigus vulgaris
- C.
Lichen planus
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
Desquamative gingivitis is a condition characterized by inflammation and peeling of the gums. It can be seen in various autoimmune diseases such as cicatricial pemphigoid, pemphigus vulgaris, and lichen planus. In cicatricial pemphigoid, the immune system attacks the skin and mucous membranes, including the gums. Pemphigus vulgaris is another autoimmune disorder that causes blistering of the skin and mucous membranes, including the gums. Lichen planus is a chronic inflammatory condition that can affect the skin, mucous membranes, and gums. Therefore, all of the above conditions can present with desquamative gingivitis.Rate this question:
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- 29.
Which statement is false?
- A.
The primary lesion of syphillis is called a chancre
- B.
The secondary lesion of syphillis occurs at the site of inoculationwith the organism
- C.
The tertiary lesion of syphillis is called a gumma
- D.
Syphillis is caused by the spirochete Treponema pallidum
Correct Answer
B. The secondary lesion of syphillis occurs at the site of inoculationwith the organismExplanation
The statement "the secondary lesion of syphilis occurs at the site of inoculation with the organism" is false. In syphilis, the primary lesion is called a chancre, which occurs at the site of infection. The secondary lesions of syphilis, on the other hand, are systemic and can appear on various parts of the body, not just at the site of inoculation. The tertiary lesion of syphilis is called a gumma, which is a granulomatous lesion that can affect multiple organs. Syphilis is indeed caused by the spirochete Treponema pallidum.Rate this question:
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- 30.
Verruca vulgaris
- A.
Clinically resembles an irritativ efibroma
- B.
Is caused by a human papilloma virus
- C.
Is most commonly seen on the buccal mucosa
- D.
All of the above
Correct Answer
B. Is caused by a human papilloma virusExplanation
The correct answer is "is caused by a human papilloma virus." Verruca vulgaris, also known as a common wart, is caused by the human papilloma virus (HPV). It is a contagious skin infection that commonly appears on the hands and fingers, but can also occur on other parts of the body. Clinically, verruca vulgaris can resemble an irritative fibroma, but the underlying cause is the HPV infection. It is not necessarily most commonly seen on the buccal mucosa, as it can occur on any skin surface.Rate this question:
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- 31.
Which area ia a reaction to angioedema could create very serious complications for the patient?
- A.
Lips
- B.
MUCOSA
- C.
EYELIDS
- D.
Epiglottis
Correct Answer
D. EpiglottisExplanation
Angioedema is a condition characterized by swelling beneath the skin, typically in the face and throat. The epiglottis is a flap of tissue located at the base of the tongue that covers the windpipe during swallowing, preventing food and liquid from entering the airway. If angioedema occurs in the epiglottis, it can cause severe swelling and potentially block the airway, leading to difficulty breathing and potentially life-threatening complications. Therefore, angioedema in the epiglottis can create very serious complications for the patient.Rate this question:
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- 32.
Which form of lichen planus can simulate hyperkeratosis or leukoplakia?
- A.
Plaque-like
- B.
Erosive
- C.
Papular
- D.
Reticular
Correct Answer
A. Plaque-likeExplanation
The plaque-like form of lichen planus can simulate hyperkeratosis or leukoplakia. This form is characterized by the presence of flat-topped, shiny, reddish-purple papules that may merge together to form larger plaques. These plaques can appear white due to hyperkeratosis, which is an excessive thickening of the outer layer of the skin. This similarity in appearance can make it difficult to distinguish between lichen planus and hyperkeratosis or leukoplakia.Rate this question:
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- 33.
This pathologic condition occurs more frequently in females and a blood test is of significant importance to the diagnosis. Oral lesions are ulcerated and a characteristic butterfly shaped lesion also appears on the skin
- A.
Pemphigus
- B.
Erosive lichen planus
- C.
Desquamative gingivitis
- D.
Lupus erythematosus
Correct Answer
D. Lupus erythematosusExplanation
Lupus erythematosus is a pathologic condition that occurs more frequently in females. A blood test is important for diagnosis, indicating its significance in identifying the condition. In addition to oral lesions that are ulcerated, lupus erythematosus also presents with a characteristic butterfly-shaped lesion on the skin. This information aligns with the given statement, making lupus erythematosus the correct answer.Rate this question:
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- 34.
Oral candidiasis is caused by a
- A.
Bacterium
- B.
Virus
- C.
Fungus
- D.
Protozoan
Correct Answer
C. FungusExplanation
Oral candidiasis, also known as oral thrush, is a fungal infection caused by the overgrowth of a type of fungus called Candida. Candida is a normal inhabitant of the mouth, but certain factors such as weakened immune system, poor oral hygiene, or the use of certain medications can lead to its overgrowth and the development of oral candidiasis. This condition is characterized by creamy white lesions on the tongue, inner cheeks, or roof of the mouth. Treatment typically involves antifungal medications to eliminate the fungus and restore oral health.Rate this question:
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- 35.
Which statement is false?
- A.
Angular chelitis may be caused by candid albicans
- B.
White lesion resulting from candiasis may not rub off
- C.
Erythematous candidiasis is usually completely asymptomatic
- D.
Denture stomatitis may be a form or oral candidiasis
Correct Answer
C. Erythematous candidiasis is usually completely asymptomaticExplanation
Erythematous candidiasis is usually not completely asymptomatic. This condition, also known as acute atrophic candidiasis or "red tongue", is characterized by red patches on the tongue and oral mucosa. It can cause discomfort, pain, and a burning sensation in the affected areas. Therefore, the statement that erythematous candidiasis is usually completely asymptomatic is false.Rate this question:
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- 36.
Which type of infection is involved when normal oral flora can cause disease?
- A.
Chronic inflamatory
- B.
Oportunistic
- C.
Hyperplastic
- D.
Granulomatous
Correct Answer
B. OportunisticExplanation
Opportunistic infections occur when normally harmless microorganisms in the body, such as the normal oral flora, cause disease in individuals with weakened immune systems or other predisposing factors. These infections take advantage of the weakened immune system to cause illness. Therefore, when normal oral flora can cause disease, it is classified as an opportunistic infection.Rate this question:
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- 37.
A cystologic smear may be helpful in the diagnosis of
- A.
Coxsackie virus infection
- B.
Human papillomavirus infection
- C.
Tuberculosis and syphillis
- D.
Candidiasis and herpessimplex infection
Correct Answer
C. Tuberculosis and syphillisExplanation
A cystologic smear can be helpful in diagnosing tuberculosis and syphilis because it allows for the examination of cells collected from the affected area. In tuberculosis, the smear can reveal acid-fast bacilli, which are characteristic of the disease. In syphilis, the smear can show the presence of Treponema pallidum, the bacterium responsible for the infection. By analyzing the cellular changes and identifying the causative organisms, a cystologic smear can aid in the accurate diagnosis of tuberculosis and syphilis.Rate this question:
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- 38.
Which condition is not associated with the epstein-barr virus?
- A.
Hairy leukoplakia
- B.
Herpangina
- C.
Nasopharyngeal carcinoma
- D.
Infectious mononucleosis
Correct Answer
B. HerpanginaExplanation
Herpangina is not associated with the Epstein-Barr virus. Herpangina is a viral infection caused by the Coxsackie virus or other enteroviruses, not the Epstein-Barr virus. It is characterized by small, painful ulcers or sores that develop in the back of the throat. On the other hand, hairy leukoplakia, nasopharyngeal carcinoma, and infectious mononucleosis are all conditions that can be associated with the Epstein-Barr virus.Rate this question:
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- 39.
A characteristeric clinical feature of herpes zoster is
- A.
Ulcer formation
- B.
Pain
- C.
Unilateral distribution of lesions
- D.
White lesions
Correct Answer
C. Unilateral distribution of lesionsExplanation
Herpes zoster, commonly known as shingles, is a viral infection that causes a painful rash. One of the characteristic clinical features of herpes zoster is the unilateral distribution of lesions. This means that the rash and blisters caused by the virus typically appear on only one side of the body, following the path of a specific nerve. This pattern of distribution helps differentiate herpes zoster from other skin conditions that may cause similar symptoms.Rate this question:
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