Chapter 12: Skin, Hair, and Nails Glossary

A complete set of vocabulary flashcards covering common skin, hair, and nail terminology provided in the lecture notes.

Alopecia

Baldness (hair loss)

Annular

circular shape to skin lesion

Bulla

elevated cavity containing free fluid larger than $1\,cm$ in diameter

Confluent

skin lesions that run together

Crust

thick, dried-out exudate left on skin when vesicles or pustules burst or dry up

Cyanosis

Dusky blue color to skin or mucous membranes due to increased amount of un oxygenated hemoglobin

Erosion

Scooped out, shal low depression in skin

Erythema

intense redness of the skin due to excess blood in dilated superficial capil laries, as in fever or inflammation

Excoriation

Self-inflicted abrasion on skin due to scratching

Fissure

linear crack in skin extending into dermis

Furuncle

boil; suppurative inflammatory skin lesion due to infected hair fol licle

Hemangioma

skin lesion due to benign proliferation of blood vessels in the dermis

Iris

target shape of skin lesion

Jaundice

yel low color to skin, palate, and sclera due to excess bilirubin in the blood

Keloid

hypertrophic scar, elevated beyond site of original injury

Lichenification

tightly packed set of papules that thickens skin; caused by prolonged intense scratching

Lipoma

benign fatty tumor

Maceration

softening of tissue by soaking

Macule

flat skin lesion with only a color change

Nevus

mole; circumscribed skin lesion due to excess melanocytes

Nodule

elevated skin lesion, $>1\,cm$ diameter

Pallor

excessively pale, whitish-pink color to lightly pigmented skin

Papule

palpable skin lesion, $<1\,cm$ diameter

Plaque

skin lesion in which papules coalesce or come together

Pruitius

itching

Purpura

red-purple skin lesion due to blood in tissues from breaks in blood vessels

Pustule

elevated cavity containing thick, turbid fluid

Scale

compact desiccated flakes of skin from shedding of dead skin cel ls

Telangiestsia

Skin lesion due to permanently enlarged and dilated blood vessels that are visible

Ulcer

sloughing of necrotic inflammatory tissue that causes a deep depression in skin, extending into dermis

Vesicle

elevated cavity containing free fluid up to $1\,cm$ in diameter

Wheal

raised red skin lesion due to interstitial fluid

Zosteriform

linear shape of skin lesion along a nerve route