Term
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Definition
| an area of pathologically altered tissue; the two types of lesions are primary and secondary. |
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Term
| Primary Lesions PRIMARY LESIONS |
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Definition
| lesions arising from previously normal skin |
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Term
Macule or Macula
FLAT NONPALPABLE CHANGES IN SKIN COLOR |
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Definition
| a flat discolored spot on the skin up to 1cm across (ex. freckles) |
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Term
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Definition
| a flat, discolored area on the skin larger than 1 cm (ex. vitiligo) |
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Term
Papule ELEVATED, PALPABLE
SOLID MASSES |
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Definition
| a solid mass on the skin up to 0.5 cm in diameter(ex.a nevus(mole)) |
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Term
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Definition
| a solide mass greater than 1 cm in diameter and limited to the surface of the skin. |
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Term
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Definition
| a solid mass greater than 1 cm that extends deeper into the epidermis |
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Term
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Definition
| a solid mass larger that 1-2 cm |
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Term
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Definition
| an area of localized skin edema ( swelling) ex hives |
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Term
vesicle ELEVATIONS FORMED
BY FLUID WITHIN A CAVITY |
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Definition
| little bladder; an elevated, fluid-filled sac (blister)within or under the epidermis up to 0.5 cm in diameter(ex. fever blister) |
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Term
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Definition
| a blister larger than 0.5cm (ex.second degree burn) (bulla=bubble) |
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Term
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Definition
| a pus-filled sac (ex. pimple) |
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Term
| Secondary lesions SECONDARY LESIONS |
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Definition
| lesions that results in changes in primary lesions |
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Term
Erosion LOSS OF SKIN SURFACE |
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Definition
| gnawed away; loss of superficial epidermis leaving an area of moisture but no bleeding (ex. area of moisture after rupture of a vesicle) |
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Term
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Definition
| an open sore on the skin or mucous membrane that can bleed and scar; sometimes accompanied by infection (ex. decubitus ulcer) |
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Term
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Definition
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Term
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Definition
| a linear crack in the skin |
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Term
Scale MATERIAL ON
SKIN
SURFACE |
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Definition
| a thin flake of exfoliated epidermis (ex. dandruff) |
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Term
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Definition
| a dried residue of serum (body liquid) pus or blood on the skin (ex. as seen in impertigo) |
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Term
| Vascular Lesions VASCULAR LESIONS |
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Definition
| lesions of a blood vessel |
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Term
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Definition
| a small round bright red blood vessel tumor on the skin, often on the truck of the elderly. |
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Term
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Definition
| a tiny red blood vessel lesion formed by the dilation of a group of blood vessels radiating from a central arteriole, most commonly on the face neck or chest (telos=end) |
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Term
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Definition
| a tiny red blood vessel lesion formed by the dilation of a group of blood vessels radiating from a central arteriole, most commonly on the face neck or chest (telos=end) |
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Term
| Purpuric lesions PURPURIC LESIONS |
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Definition
| purpura; lesions resulting from hemorrhages into the skin |
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Term
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Definition
| spot;reddish brown minute hemorrhagic spots on the skin that indicate a bleeding tendency; a small purpura |
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Term
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Definition
| bruise; a black and blue mark; a large purpura (chymo=juice) |
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Term
| Cicatrix of the skin SCAR FORMATIONS |
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Definition
| a mark left by the healing of a sore or wound showing the replacement of destroyed tissue by fibrous tissue (cicatrix=scar) |
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Term
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Definition
| an abnormal overgrowth of scar tissue that is thick and irregular (kele=tumor) |
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Term
| Epidermal tumors EPIDERMAL TUMORS |
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Definition
| skin tumors arising from the epidermis |
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Term
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Definition
| a congenital malformation on the skin that can be epidermal or vascular; also called a mole |
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Term
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Definition
| a mole with precancerous changes |
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Term
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Definition
| an epidermal tumor caused by a papilloma virus also called a wart |
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