Chapter 18 review

Epidermis

Outermost layer of the skin

Dermis

Deeper skin layer with blood vessels, nerves, and sensory functions

Nails

Structures made of keratin

Herpes zoster

Virus causing shingles and chickenpox, follows spinal nerve path

Lyme disease

Tick-borne illness with characteristic bull's-eye rash

Tinea unguium

Fungal infection of fingernails/toenails with white patches

Body lice

Infestation common in individuals with poor hygiene

Squamous cell carcinoma

Skin cancer presenting as firm red nodule or elevated sore

Lentigo

Small brown spot on face, neck, hands due to sun exposure

Abrasions

Skin trauma from scraping, also known as friction burns

Verrucae

Warts, chronic skin condition affecting children

Erythema

Skin redness

Elephantiasis

Swelling from parasitic worm blocking lymphatic drainage

Biopsy

Procedure to diagnose nodules and chronic skin lesions

Common warts

Contagious warts on hands/fingers, common in children

Plantar warts

Warts on the sole of the foot

Furuncle

Small skin abscess, commonly known as a boil

MRSA

Bacteria resistant to common staph infection antibiotics

Avulsion

Skin or appendage torn away, often due to machinery accidents

Heat exhaustion

Heat prostration

Heatstroke

Severe heat condition with high temperature and dry skin