Skin, Hair, and Nails

Question 1

annular

Answer 1

• circular
• begins in centre and spreads to periphery

Question 2

annular examples

Answer 2

tinea corporis (ringworm), tinea versicolor, pityrias rosea

Question 3

confluent

Answer 3

• lesions that merge together

Question 4

confluent examples

Answer 4

urticaria (hives)

Question 5

discrete

Answer 5

• distinct, individual lesions that remain separated

Question 6

discrete examples

Answer 6

molluscum

Question 7

grouped

Answer 7

clustered of lesions

Question 8

grouped examples

Answer 8

vesicles of contact dermatitis

Question 9

gyrate

Answer 9

twisted, coiled, spiral, snakelike

Question 10

target

Answer 10

• also called iris
• concentric rings of colour in lesions

Question 11

target examples

Answer 11

erythema multiforme

Question 12

linear

Answer 12

a scratch, streak, line, or stripe

Question 13

polycyclic

Answer 13

annular lesions that grow together

Question 14

polycyclic examples

Answer 14

lichen planus, psorasis

Question 15

Zosteriform

Answer 15

linear arrangement along nerve route

Question 16

zosteriform example

Answer 16

herpes zoster

Question 17

macule

Answer 17

• solely a color change; flat and circumscribed, < 1 cm diameter

Question 18

macule examples

Answer 18

freckles, flat nevi, hypopigmentation, petechiae, measles, scarlet fever

Question 19

papule

Answer 19

solid, elevated circumscribed, ,1cm diameter, caused by superficial thickening of the epidermis

Question 20

papule examples

Answer 20

elevated nevus (mole), lichen planus, molluscum, wart (verruca)

Question 21

patch

Answer 21

macules >1cm diameter

Question 21

patch examples

Answer 21

congenital dermal melanocytosis

Question 22

plaque examples

Answer 22

psorasis, lichen planus

Question 22

plaque

Answer 22

papules that calesce to form surface elevation wider than 1cm; plateaulike, disc shaped lesion

Question 23

nodule

Answer 23

solid, elevated, hard or soft, > 1cm diameter
- may extend deeper into the dermis than a papule

Question 24

nodule examples

Answer 24

xanthoma, fibrma, intradermal nevi

Question 25

tumour

Answer 25

larger than a few cm in diameter
- firm or soft
- deeper in the dermis
- may be malignant or benign

Question 26

tomour example

Answer 26

lipoma, hemangioma

Question 27

wheal

Answer 27

superficial, raised, transient, and erythematous, slightly irregular shape becasue of edema

Question 28

wheal examples

Answer 28

mosquito bite, allergic reaction, dermographism

Question 29

urticaria (Hives)

Answer 29

wheals that coalesce for extensive reaction; intensely pruitic