Chapter 20 - Skin Diseases and Disorders

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Skin disorder characterized by chronic inflammation of the sebaceous glands from retained secretions and Propionbacterium acnes (P. acnes) bacteria. Acne
Congenital leukoderma or absence of melanin pigment of the body, including the hair, skin, and eyes. Albinism
Deficiency in perspiration, often a result of fever or certain skin diseases. Anhidrosis
Condition of dry, scaly skin due to a deficiency or absence of sebum that is caused by old age and by exposure to cold. Asteatosis
Most common and least severe type of skin cancer; often characterized by light or pearly nodules. Basal Cell Carcinoma
Foul-smelling perspiration, usually noticeable in the armpits or on the feet. Bromhidrosis
Large blister containing a watery fluid; similar to a vesicle but larger. Bulla (plural: bullae)
Condition characterized by increased pigmentation on the skin in spots that are not elevated. Chloasma
Hair follicle filled with keratin and sebum. When the sebum of the comedone is exposed to the environment, it oxidizes and turns black (blackheads). When the follicle is closed and not exposed to the environment, comedones are a white or cream color (whiteheads). Comedo (plural: comedones)
Dead cells that form over a wound or blemish while it is healing; an accumulation of sebum and pus, sometimes mixed with epidermal material. Crust
Closed, abnormally developed sac containing fluid, semifluid, or morbid matter, above or below the skin. Cyst
Inflammatory condition of the skin Dermatitis
Also known as contact dermatitis. An eruptive skin infection caused by contact with irritating substance such as chemicals or tints. Dermatitis Venenata
Inflammatory, painful itching disease of the skin, acute or chronic in nature, presenting many forms of dry or moist lesions. Eczema
Skin sore or abrasion produced by scratching or scraping. Excoriation
Crack in the skin that penetrates the epidermis, such as chapped hands or lips. Fissure
Fever blister or cold sore; recurring viral infection Herpes Simplex
Excessive sweating, caused by heat or general body weakness. Hyperhidrosis
Abnormal growth of the skin. Hypertrophy
Thick scar resulting from excessive growth of fibrous tissue. Keloid
Acquired, superficial, thickened patch of epidermis commonly known as callus, caused by pressure or friction on the hands and feet. Keratoma
Technical term for freckles. Small yellow- to brown-colored spots on skin exposed to sunlight and air. Lentigines (singular: lentigo)
Mark on the skin. May indicate an injury or damage that changes the structure of tissues or organs. Lesion
Skin condition characterized by light abnormal patches; caused by a burn or congenital disease that destroys the pigment-producing cells. Leukoderma
Spot or discoloration on the skin, such as a freckle. Macule (plural: maculae)
Most serious form of skin cancer; often characterized by black or dark brown patches on the skin that may appear uneven in texture, jagged, or raised. Malignant Melanoma
Benign, keratin-filled cysts that can appear just under the epidermis and have no visible opening. Milia
Acute inflammatory disorder of the sweat glands, characterized by the eruption of small red vesicles and accompanied by burning, itching skin. Miliaria Rubra
Small, brownish spot or blemish on the skin, ranging in color from pale tan to brown or bluish black. Mole
Small or large malformation of the skin due to abnormal pigmentation or dilated capillaries; commonly known as birthmark. Nevus
Pimple; small circumscribed elevation on the skin that contains no fluid but may develop pus. Papule
Skin disease characterized by red patches, covered with silver-white scales usually found on the scalp, elbows, knees, chest, and lower back, but rarely on the face. Psoriasis
Inflamed pimple containing pus. Pustule
Chronic congestion appearing primarily on the cheeks and nose, characterized by redness, dilation of the blood vessels, and formation of papules and pustules. Rosacea
Any thin plate of epidermal flakes, dry or oily, such as abnormal or excessive dandruff. Scale
Light-colored, slightly raised mark on the skin formed after an injury or lesion of the skin has healed. Scar or Cicatrix
Skin condition caused by an inflammation of the sebaceous glands. Often characterized by inflammatio, dry or oily scaling, or crusting and/or itchiness. Seborrheic Dermatitis
A greatly increased or exaggerated sensitivity to products. Sensitization
A small brown or flesh-colored outgrowth of the skin. Skin Tag
Type of skin cancer more serious than basal cell carcinoma; often characterized by scaly red papules or nodules. Squamous Cell Carcinoma
Abnormal brown or wine-colored skin discoloration with a circular and irregular shape. Stain
Sebaceous cyst or fatty tumor. Steatoma
Change in pigmenation of skin caused by exposure to the sun or ultraviolet rays. Tan
Dilation of the surface blood vessels. Telangiectasias
Abnormal rounded, solid lump above, within, or under the skin; larger than a papule. Tubercle
A swelling; an abnormal cell mass resulting from excessive multiplication of cells, varying in size, shape, and color. Tumor
Open lesion on the skin or mucous membrane of the body, accompanied by pus and loss of skin depth. Ulcer
Technical term for wart; hypertrophy of the papillae and epidermis. Verruca
Small blister or sac containing clear fluid, lying within or just beneath the epidermis. Vesicle
Milky-white spots (leukoderma) of the skin. Vitiligo is hereditary and may be related to thyroid conditions. Vitiligo
Itchy, swollen lesion that lasts only a few hours; caused by a blow, the bite of an insect, urticaria, or the sting of a nettle. Wheal