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Chapter 12 Medical Terminology

Word definitions for chapter 12
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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