Skin Disorders and Dieseases

Primary lesion: a small blister or sac containing clear fluid, lying within or just beneath the epidermis. Poison ivy and poison oak for example produce vesicles. requires medical referral

Primary lesion: a large blister containing a watery fluid; similar to a vesicle but larger; requires medical referral

Lesions that are a different color than the color of the skin and/or lesions that are raised above the surface of the skin. requires medical referral

Primary lesionsan abnormal, rounded, solid lump above, within, or under the skin; larger than a papule. requires medical referral

A closed, abnormally developed sac that contains fluid, pus, semifluid, or morbid matter, above or below the skin. frequently seen in severe acne cases. requires medical attention

Primary lesion: any flat spot or discoloration on the skin, such as a freckle or a red spot, left after a pimple has healed

A solid bump larger than .4 inches(1 centimeter) that can be easily felt. requires medical referral

A small elevation on the skin that contains no fluid but may develop pus. they are frequently seen in acne

A raised, inflamed, papule with a white or yellow center containing pus in the top of the lesion referred to as the head of the pimple

An abnormal mass varying in size, shape, and color. they are sometimes associated with cancer, but the term can mean any sort of abnormal mass. requires medical attention

An itchy, swollen lesion that lasts 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 hives and mosquito bites

Characterized by piles of material on the skin surface, such as a crust or scab, or by depressions in the skin surface, such as an ulcer

Dead cells that form over a wound or blemish while it is healing; an accumulation of sebum and pus,sometimes mixed with epidermal material. an example is the scab on a sore

A skin sore or abrasion produced by scratching or scraping

A crack in the skin that penetrates the dermis. examples are severely cracked and/or chapped hands or lips