63 terms

Ch. 8 Skin Disorders and Diseases

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albinism
congenital hereditary condition characterized by partial or total lack of pigment in the skin, hair, and eyes
allergic contact dermatitis (ACD)
an allergy to an ingredient or a chemical, usually caused by repeated skin contact with the chemical
anaerobic
cannot survive in the presence of oxygen
anhidrosis
Deficiency in perspiration, often a result of fever or certain skin diseases.
basal cell carcinoma
Most common and least severe type of skin cancer; often characterized by light or pearly nodules.
bromhidrosis
Foul-smelling perspiration, usually noticeable in the armpits or on the feet., foul-smelling perspiration, usually noticeable in the armpits or on the feet, that is caused by bacteria
bulla (plural:bullae)
Large blister containing a watery fluid; similar to a vesicle but larger.
chloasma
(liver spots) condition characterized by hyperpigmentation on the skin in spots that are not elevated
closed comedo
also known as a whitehead; hair follicle is closed and not exposed to the environment; sebum remains a white or cream color and comedone appears as small bump just under the skin surface
conjunctivitis
inflammation of the conjunctiva; also called pinkeye
contact dermatitis
An inflammation of the skin caused by having contact with certain chemicals or substances; many of these substances are used in cosmetology.
crust
Dead cells that form over a wound or blemish while it is healing; an accumulation of sebum and pus, sometimes mixed with epidermal material.
cyst
Closed, abnormally developed sac containing fluid, semifluid, or morbid matter, above or below the skin.
dermatitis
inflammatory condition of the skin
dyschromias
abnormal colorations of the skin that accompany many skin disorders and systemic disorders
eczema
an inflammatory, uncomfortable, and often chronic disease of the skin, characterized by moderate to severe inflammation, scaling, and sometimes severe itching
excoriation
Skin sore or abrasion produced by scratching or scraping.
extrinsic factors
Primarily environmental factors that contribute to aging and the appearance of aging.
fissure
Crack in the skin that penetrates the epidermis, such as chapped hands or lips.
free radicals
unstable molecules that cause biochemical aging, especially wrinkling and sagging of skin
herpes simplex
Recurring viral infection that often presents as a fever blister or cold sore.
hyperhidrosis
excessive sweating, caused by heat or general body weakness
hyperpigmentation
darker than normal pigmentation, appearing as dark splotches
hypertrophy
Abnormal growth of the skin.
hypopigmentation
absence of pigment, resulting in light or white splotches
impetigo
contagious bacterial skin infection characterized by weeping lesions
intrinsic factors
Skin aging factors over which we have little control.
irritant contact dermatitis
Abbreviated ICD; occurs when irritating substances temporarily damage the epidermis.
keloids
thickened scars formed after surgery or trauma to skin
keratoma
Acquired, superficial, thickened patch of epidermis commonly known as callus, caused by pressure or friction on the hands and feet.
lentigines (singular: lentigo)
Technical term for freckles. Small yellow- to brown-colored spots on skin exposed to sunlight and air.
lesion
Mark on the skin. May indicate an injury or damage that changes the structure of tissues or organs.
leukoderma
Skin disorder characterized by light abnormal patches; caused by a burn or congenital disease that destroys the pigment-producing cells.
macule (plural: maculae)
Flat spot or discoloration on the skin, such as a freckle or a red spot left after a pimple has healed.
malignant melanoma
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.
millia
benign keratin filled cysts similiar to sesame seeds no visible opening
miliaria rubra
also known as prickly heat; an acute inflammatory disorder of the sweat glands, characterized by the eruption of small red vesicles and accompanied by burning, itching skin
mole
Small, brownish spot or blemish on the skin, ranging in color from pale tan to brown or bluish black.
nevus
a birthmark or mole; malformation of the skin due to abnormal pigmentation or dilated capillaries.
nodule
a solid bump larger than .4 inches (1 centimeter) that can be easily felt
noncomedogenic
product that has been designed and proven not to clog the follicles
primary lesions
Lesions that are a different color than the color of the skin, and/or lesions that are raised above the surface of the skin.
psoriasis
skin disease characterized by red patches covered with silver-white scales; usually found on the scalp, elbows, knees, chest and lower back
retention hyperkeratosis
The hereditary tendency for acne-prone skin to retain dead cells in the follicle, forming an obstruction that clogs follicles and exacerbates inflammatory acne lesions such as papules and pustules.
rosacea
Chronic congestion appearing primarily on the cheeks and nose, characterized by redness, dilation of the blood vessels, and formation of papules and pustules.
scale
any of the hard, thin plates that cover fish and certain reptiles
scar
also known as cicatrix; a lightly raised mark on the skin formed after an injury or lesion of the skin has healed
sebaceous cyst
A large protruding pocket-like lesion filled with sebum; frequently seen on the scalp and on the back; should be removed surgically by a dermatologist.
seborrheic dermatitis
Skin condition caused by an inflammation of the sebaceous glands. Often characterized by inflammatio, dry or oily scaling, or crusting and/or itchiness.
secondary skin lesions
characterized by piles of material on the skin surface such as
a crust or scab or depressions in the skin surface such as an ulcer.
sensitization
Allergic reaction created by repeated exposure to a chemical or a substance.
skin tag
A small brown or flesh-colored outgrowth of the skin.
squamous cell carcinoma
Type of skin cancer more serious than basal cell carcinoma; often characterized by scaly red papules or nodules.
stain
Abnormal brown or wine-colored skin discoloration with a circular and irregular shape.
tan
change in pigmentation of skin caused by exposure to the sun or ultraviolet light
telangiectasis
distended or dilated surface blood vessels
tubercle
abnormal, rounded, solid lump above, within, or under the skin; larger than a papule
tumor
an abnormal new mass of tissue that serves no purpose
ulcer
open lesion on the skin or mucous membrane of the body, accompanied by pus and loss of skin depth and possibly weeping fluids or pus
verruca
A wart; hypertrophy of the papillae and epidermis caused by a virus. it is infectious and contagious.
vesicle
Small blister or sac containing clear fluid, lying within or just beneath the epidermis.
vitiligo
Hereditary condition that causes hypopigmented spots and splotches on the skin may be related to thyroid conditions.
wheal
itchy, swollen lesion that last only a few hours, caused by a blow
or scratch, the bite of an insect, urticaria(skin allergy) or the sting of a nettle. Examples include hive and mosquito bites.