Skin - Terms

Question 1

Macule

Example?

Answer 1

Flat lesion, well-circumscribed color change border, under 1 cm

Freckle

Question 2

Patch

Example?

Answer 2

Macule > 1 cm

Large birthmark

Question 3

Papule

Examples? (2)

Answer 3

Elevated dome-shaped or flat-topped solid lesion, under 1 cm

Mole, acne

Question 4

Plaque

Example?

Answer 4

Elevated flat-topped lesion > 1 cm

Psoriasis

Question 5

Vesicle

Examples? (2)

Answer 5

Small fluid-filled blister under 1 cm

Chickenpox, Shingles

Question 6

Bulla

Example?

Answer 6

Large fluid-filled blister > 1 cm

Pustular psoriasis

Question 7

Wheal

Example?

Answer 7

Transient, itchy, elevated, erythematous smooth lesion

Hives (urticaria)

Question 8

Acanthosis

Example?

Answer 8

Diffuse epidermal hyperplasia

Acanthosis nigricans

Question 9

Dyskeratosis

Answer 9

Abnormal premature keratinization of cells below stratum granulosum

Question 10

Hypergranulosis

Example?

Answer 10

Hyperplasia of stratum granulosum, often due to intense rubbing

Lichen planus

Question 11

Acantholysis

Example?

Answer 11

Separation of epidermal cells

Pemphigus vulgaris

Question 12

Hyperkeratosis

Example?

Answer 12

Hyperplasia of stratum corneum

Psoriasis

Question 13

Parakeratosis

Example?

Answer 13

Hyperkeratosis w/ retention of nuclei in stratum corneum

Psoriasis

Question 14

Spongiosis

Example?

Answer 14

Epidermal accumulation of edematous fluid in intercellular spaces

Eczema dermatitis

Question 15

Onycholysis

Example?

Answer 15

Separation of nail plate from nail bed

Tinea pedis (athlete’s foot)