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Word definitions for chapter 12

cellulitis

An acute, rapidly spreading bacterial infection within the connective tissues

dysplastic nevi

Atypical moles that can develop into skin cancer

alopecia areata

Autoimmune disorder in which there are well-defined bald areas

diaphoresis

Profuse sweating

cicatrix

Normal scar resulting from the healing of a wound

bulla

A large blister that is usually more than 0.5 cm in diameter

debridement

The removal of dirt, foreign objects, damaged tissue, and cellular debris from a wound

second-degree

A burn that results in blisters and damage only to the epidermis and dermis

verrucae

Small, hard skin lesions caused by the human papillomavirus

keratin

Fibrous protein found in hair, nails, and skin

unguis

Fingernail or toenail

sebaceous

Type of gland that secretes sebum

mammary

Type of gland that produces milk

dermis

Layer of tissue below the epidermis

onychocryptosis

Medical term for the condition commonly known as an ingrown toenail

impetigo

Bacterial skin infection characterized by isolated pustules that become crusted and rupture. Highly contagious condition common among children

eczema

Inflammatory skin disease with possible blistering, cracking, oozing, or bleeding

abscess

Localized collection of pus

onychia

Inflammation of the nail bed that usually results in the loss of the nail. Also known as onychitis

scleroderma

Autoimmune disorder in which the connective tissues become thickened and hardened, causing the skin to become hard and swollen

pediculosis

Infestation of lice

urticaria

Itchy wheals caused by an allergic reaction that are commonly known as hives

rhytidectomy

surgical removal of excess skin for the elimination of wrinkles

onychomycosis

Fungal infection of the nail

folliculitis

Inflammation of the hair follicles

pruritus

Commonly known as itching, is associated with most forms of dermatitis

Ichthyosis

Group of hereditary disorders that are characterized by dry, thickened, and scaly skin

sclerotherapy

Treatment of spider veins by injecting a saline into the vein

cauterization

Destruction of tissue by burning

cyst

Abnormal sac containing gas, fluid, or a semisolid material

age spots

Discolorations caused by sun exposure

lipocytes

Cells that manufacture and store large quantities of fat

melanocytes

Special cells found in the basal cell layer that contain and produce melanin

melanin

Pigment that determines the color of the skin

basal layer

The lowest layer of the epidermis

cutaneous

Pertaining to the skin

hirsutism

Presence of excessive body and facial hair in woman

contusion

An injury to underlying tissues without breaking the skin, and is characterized by discoloration and pain

ecchymosis

Large, irregular area of purplish discoloration due to bleeding under the skin. Commonly known as a bruise

exudate

A fluid that leaks out of an infected wound

ulcer

An open lesion of the skin or mucous membrane resulting in tissue loss around the edges

erythema

Redness of the skin due to capillary dilation

rash

A breaking out, or eruption, that changes the color or texture of the skin

exanthem

Refers to a widespread rash, usually in children

callus

A thickening of part of the skin caused by repeated rubbing

first-degree

A burn that results in superficial damage to the epidermis

third-degree

A burn that results in damage to the epidermis, dermis, and subcutaneous layers, and possibly the muscle and bone below

blepharoplasty

surgical reduction of the upper and lower eyelids by removing sagging skin

nevus

small, dark, skin growth that develops from melanocytes in the skin. Also known as a mole

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