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Dermatological exam
Derm
25
Medical
Graduate
01/14/2009

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Term
a circumscribed area of a different color from the surrounding skin; flat, without elevation or depression, less than 1.0 cm in size. Most common color changes are white (hypopigmented), brown (hyperpigmented), and pink/red (erythematous). Outline may be regular or irregular; color may be uniform or variegate.
Definition
Macule
Term
same as a macule but 1 cm or greater in size.
Definition
Patch
Term
Difference in Macule and patch
Definition
Macule less than 1 cm
PAtch 1 cm or greater
Term
a discrete solid elevated lesion that may be dome-shaped or flat-topped, firm or soft, smoothe or rough-surfaced; most commonly flesh-colored, pink/red, or brown; less than 1 cm in size. When on a narrow stalk, the papule is described as pedunculated, when on a wider stalk, it is sessile. With a depression in the center it may be called umbilicated.
Definition
Papule
Term
an elevated flat lesion broader than it is thick, often formed from a coalescence of papules; 1 cm or greater in size. When the thickened ______ consists of epidermal thickening accompanied by accentuation of skin markings, it is described as lichenified and is usually the result of chronic rubbing.
Definition
plaque
Term
a well-defined solid palpable lesion with significant depth; 1 cm or greater in size. Other characteristics may be described as for a papule.
Definition
nodule
Term
a papule or plaque resulting from extravasation of serous fluid from blood vessels into the surrounding dermis.
Definition
wheal
Term
a clear fluid-filled lesion; less than 1 cm in size.
Definition
Vesicle
Term
a clear fluid-filled lesion 1 cm or greater in size, may be described as tense or flaccid.
Definition
Bulla
Term
a white fluid-filled lesion with contents of purulent material.
Definition
pustule
Term
a walled cavity containing fluid or semisolid material, may be superficial and visible above the surface of the skin or deep and detectable only on palpation, often mobile and somewhat compressible.
Definition
Cyst
Term
excess stratum corneum that flakes – it may be white or gray, described as loose, adherent, micaceous, or fine.
Definition
Scale
Term
a hardened layer from dried serum (yellow/brown), blood (hemorrhagic, red/black), or purulent exudate (yellow/green).
Definition
Crust
Term
localized loss of epithelium, often from rupture of vesicles or bullae. Crust may form on its surface.
Definition
erosion
Term
thin linear crack in the epidermis, often due to excessive dryness.
Definition
Fissure
Term
circumscribed loss of epidermis and at least a portion of the dermis. ______s may be of varying depths, have characteristic borders such as ragged or undermined, and have a clean or unclean base. Often an eschar (scab or dry crust) forms in the base.
Definition
Ulceration
Term
loss of substance of the integument, may be epidermal thinning or loss of elements of the dermis leading to a visible depression.
Definition
Atrophy
Term
new connective tissue that replaces lost substance in the dermis or subcutaneous tissue as a result of injury or disease. Scars may be thin and atrophic or firm and nodular overgrowths of connective tissue (keloids).
Definition
Scar
Term
characterized by pruritus and erythematous scaling patches with vesicles in the acute stage and lichenified plaques in the chronic stage; involves an infiltrate of inflammatory cells in the superficial dermis and epidermis.
Definition
Eczematous dermatitis
Term
characterized by erythematous scaling papules and plaques without vesicles; involves an infiltrate of inflammatory cells in the superficial dermis and epidermis sometimes with epidermal thickening.
Definition
Papulosquamous disorders
Term
characterized by vesicles and bullae that may be on an inflamed or non-inflamed base; vesicle/bulla formation may occur within the epidermis or at the dermo-epidermal junction
Definition
Vesiculobullous disease
Term
characterized by erythematous patches or wheals, petechiae or palpable purpura; involves dilation of blood vessels with extravasation of fluid or red cells, sometimes damage to the vessel walls.
Definition
Vascular reaction patterns
Term
Alopecia
Definition
Loss of hair
Term
hypertrichosis
Definition
excess of hair not limited to androgen-dependent areas
Term
Hirsutism
Definition
excess of terminal hair growth in women in a typical male patern
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