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        | An erosion or ulcer that is eating or gnawing away tissue. |  | 
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 | Definition 
 
        | An infection or inflammation of the hair follicles. |  | 
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 | Definition 
 
        | A condition that causes a burning or tingling sensation followed by the development of genital lesions. |  | 
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 | Definition 
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 | Definition 
 
        | A common skin condition that occurs when oil and dead skin cells clog the skin's pores. |  | 
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 | Definition 
 
        | Produces sebum, which acts to protect the body from dehydration and the possible absorption of harmful substances. |  | 
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 | Definition 
 
        | A highly aggressive cancer that tends to spread to other parts of the body. |  | 
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 | Definition 
 
        | An inherited disorder that causes the absence of melanin in skin, hair, and eyes. |  | 
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 | Definition 
 
        | A highly contagious disorder of the skin caused by the scabies mite or human itch mite. |  | 
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 | Definition 
 
        | Sometimes called ringworm. |  | 
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 | Definition 
 
        | The most common form of skin cancer; most often caused by overexposure to the sun. |  | 
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 | Definition 
 
        | Coiled, ball-shaped structures that are located in the dermis or subcutaneous layers. |  | 
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 | Definition 
 
        | A protective pigmentation that guards the body against the sun's ultraviolet rays. |  | 
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 | Definition 
 
        | Also known as the nail bed. |  | 
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 | Definition 
 
        | The middle layer of skin; often referred to as the "true skin". |  | 
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        | Term 
 | Definition 
 
        | Excessive growth of the stratum corneum layer of the epidermis. |  | 
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        | Term 
 | Definition 
 
        | Bacteria arriving from a distant source via the bloodstream. |  | 
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        | Term 
 | Definition 
 
        | Cells that produce melanin, the pigment that gives the skin color. |  | 
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        | Term 
 | Definition 
 
        | The crescent-shaped white area at the base of the nail. |  | 
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        | Term 
 | Definition 
 
        | A boil that is actually an abscess of a hair follicle and the adjacent subcutaneous tissues. |  | 
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 | Definition 
 
        | More commonly referred to as "jock itch" |  | 
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        | Term 
 | Definition 
 
        | An inflammatory condition of sebaceous or oil glands caused by an increase in sebum. |  | 
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 | Definition 
 
        | An allergic reaction of the skin caused by irritating substances. |  | 
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 | Definition 
 
        | A chronic skin condition caused by an allergic reaction on the skin. |  | 
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        | Term 
 | Definition 
 
        | Also known as "athlete's foot" |  | 
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        | Term 
 | Definition 
 
        | A skin infection caused by bacteria. |  | 
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        | Term 
 | Definition 
 
        | Small blisters associated with contact dermititis. |  | 
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 | Definition 
 
        | The redness associated with cellulitis. |  | 
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 | Definition 
 
        | A fungus found on the head. |  | 
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 | Definition 
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 | Definition 
 
        | A collection of furuncles. |  | 
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 | Definition 
 
        | Divided into 4 layers or strata. |  | 
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 | Definition 
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        | Term 
 | Definition 
 
        | Thought to be caused by a build up of dead skin cells. |  | 
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 | Definition 
 
        | An area of thickened skin that does not have an identifiable border. |  | 
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        | Term 
 | Definition 
 
        | A malignant tumor that affects the middle layer of skin. |  | 
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        | Term 
 | Definition 
 
        | Also known as leukoderma. |  | 
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        | Term 
 | Definition 
 
        | A type of infection caused by viruses in the HPV family. |  | 
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        | Term 
 | Definition 
 
        | Often referred to as a hypertrophic scar. |  | 
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        | Term 
 | Definition 
 
        | A disorder primarily of the facial skin, often characterized by flare-ups and remissions. |  | 
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 | Definition 
 
        | Baldness or loss of hair. |  | 
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 | Definition 
 
        | Also known as sweat glands. |  | 
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 | Definition 
 
        | An infestation of lice in the form of eggs, larvae, or adult lice. |  | 
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 | Definition 
 
        | A condition of thick abnormal hair growth that affects men and women, although women are more commonly affected by and diagnosed with the disorder. |  | 
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        | Term 
 | Definition 
 
        | An acute spreading bacterial infection below the surface of the skin. |  | 
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