Test Your Knowledge On Skin Infections Question!
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- 1.__________ presents as a well-defined , spreading erythematous involving the blocking of dermal lymphatics.
- A.
Folliculitis
- B.
Gangrene
- C.
Erysipelas
- D.
Impetigo
- 2.What is the most common cause of skin infections?
- A.
Streptococcus pyogenes
- B.
Staphylococcus aureus
- C.
Group B hemolytic Strep
- D.
MRSA
- 3.A superficial infection (inflammation) in and around the hair follicle.
- 4.What histological finding in folliculitis is responsible for enclosing the site of infection, only allowing for the local spread of infection?
- A.
Outward drainage
- B.
Inward drainage
- C.
Fibrin deposits
- D.
Purulent formation
- 5.Gram negative bacteria produce the enzyme beta-lactamase that act by what mechanism?
- A.
Inactivate membrane receptors
- B.
Hydrolyze lactam rings thus inactivating penicillin
- C.
Phosphorylate backbone of penicillin rendering it ineffective
- D.
Hydrolyze lactam rings making them susceptible to penicillin degradation
- 6.MRSA can be treated with
- A.
Penicillin
- B.
Methicillin
- C.
Vancomycin
- D.
Cephalosporin
- 7.Another name for Staphylococcal scalded syndrome is
- A.
Elsberg syndrome
- B.
Gangrene
- C.
Ritter's disease
- D.
TSS
- 8.Strep. pyogenes secretes toxic products, such as pyrogenic endotoxins (SPEA, B, C) with acts on skin blood vessels to cause the diffuse erythematous rash seen in what clinical condition?
- A.
Mumps
- B.
Rubella
- C.
Scarlet fever
- D.
Measles
- 9.This infection with Strep. pyogenes involves the dermal lymphatics and presents clinically with a "butterfly-wing" rash
- A.
Folliculitis
- B.
Impetigo
- C.
Erysipelas
- D.
Cellulitis
- 10.This is an example of an acute spreading infection of the skin that involves the subcutaneous, fat tissue
- A.
Folliculitis
- B.
Erysipelas
- C.
Cellulitis
- D.
Gangrene
- 11.Synergistic bacterial gangrene is typically caused by what type of Strepococci and Staph. aureus?
- A.
Obligate aerobic
- B.
Microaerophilic
- C.
Facultative anaerobic
- D.
Aerotolerant
- 12.Vesicular skin lesions are sites of viral replication and are infectious.
- A.
True
- B.
False
- 13.______ is known to have only one serologic type.
- A.
HSV
- B.
HPV
- C.
VZV
- D.
Hepatitis
- 14.Varicella is typically less severe in adults, more likely to cause complications in children.
- A.
True
- B.
False
- 15.__________ dermatomes are the most commonly affected sites for varicella lesions.
- A.
Cervical
- B.
Thoracic
- C.
Lumbar
- D.
Sacral
- 16.Reactivation of VZV in sensory neurons is characterized by what clinical symptom?
- A.
Septicemia
- B.
Tremors
- C.
Paresthesia and pain
- D.
Agressive behavior
- 17.Past infection of VZV is determined by detecting VZV IgG by using what laboratory technique?
- A.
PCR
- B.
ELIZA
- C.
Western Blot
- D.
GCMS
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