Terms Flashcards

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1
Q

What are comedones?

A

dilated hair follicle full of keritinaceous material i.e. a balckhead;

can be primary or secondary lesion

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2
Q

Define a macule

A

flat lesion <1 cm in diameter with pigment change

primary lesion

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3
Q

Patch

A

same as a macule but >1 cm in diameter

primary lesion

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4
Q

Papule

A

a cluster of coalescing papules, raised, often with a flat top

primary lesion

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5
Q

Pustule

A

Elevation of skin with an accumulation of pus

primary lesion

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6
Q

Vesicle

A

<1cm elevation of skin with clear fluid

primary lesion

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7
Q

Bulla

A

same as a vesicle but >1 cm.

primary lesion

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8
Q

Wheal

A

raised dermal lesion consisting of dermal edema

primary lesion

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9
Q

nodule

A

elevation of skin > 1 cm; Can also be a tumor

primary lesion

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10
Q

Erythema

A

redness of skin

primary lesion

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11
Q

Epidermal collarette

A

ring of lifting keratin in centripetal manner

secondary lesion

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12
Q

Erosion

A

defect in epidermis (ulcer)

Secondary lesion

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13
Q

Lichinification

A

thickening of epidermis due to chronic trauma and inflammation

secondary lesion

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14
Q

Scar

A

an area of fibrous tissue replacing damaged dermis

secondary lesion

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15
Q

Alopecia

A

lack of hair

primary or secondary lesion

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16
Q

scale

A

loose fragments of stratum corneum

primary or secondary lesion

17
Q

follicular cast

A

plug of keratinaceous debris

primary or secondary lesion

18
Q

Crust

A

dried exudate and cells adhered to the skin

primary or secondary lesion

19
Q

Hyperpigmentation

A

increase in pigment of the skin *can be an indication of chronicity.

primary or secondary lesion

20
Q

hypopigmentation

A

decrease in pigmentation of the skin

primary or secondary lesion

21
Q

leukoderma

A

white skin

primary or secondary lesion

22
Q

leukotrichia

A

white hair

primary or secondary lesion

23
Q

fissure

A

long narrow opening made by cracking or splitting of the skin

secondary lesion

24
Q

Trichoscopy

A

hair plucks for cytological evaluation