Ch.18 keyterms

Abrasion

A wound caused by rubbing or scraping the skin, often resulting in a superficial injury.

Alopecia

The partial or complete absence of hair from areas of the body where it normally grows.

Avulsion

The tearing away of a body part or structure, often caused by trauma.

Blunt trauma

Injury caused by a blunt object or force that does not penetrate the skin but damages underlying tissues.

Comedones

Small bumps on the skin resulting from clogged hair follicles, commonly known as blackheads or whiteheads.

Contusion

A bruise or injury to the skin or underlying tissues without breaking the skin.

Erythema

Redness of the skin caused by increased blood flow to the area, often due to inflammation or infection.

Exacerbation

A worsening or flare-up of a medical condition or disease.

Frostbite

Tissue injury caused by exposure to extreme cold temperatures, leading to freezing of the skin and underlying tissues.

Hirsutism

Excessive hair growth in areas where hair does not typically grow in large amounts, often in women.

Incision

A cut or wound made by a sharp object, such as a knife or scalpel.

Keratin

A tough protein found in the skin, hair, and nails, providing strength and protection.

Laceration

A deep cut or tear in the skin or flesh, often with jagged edges.

Lesion

An abnormal area of damaged tissue, such as a wound, sore, or tumor.

Paronychia

Infection of the skin around a fingernail or toenail, often causing redness, swelling, and pain.

Pilonidal cyst

A cyst or abscess near the tailbone, often filled with pus and requiring medical treatment.

Pruritus

Itching of the skin, often associated with various skin conditions or allergies.

Pustules

Small, pus-filled bumps on the skin, often a sign of infection or inflammation.

Sebum

An oily substance produced by the skin's sebaceous glands, helping to moisturize and protect the skin.

Ulcer

A sore or open wound on the skin or mucous membrane, often slow to heal and prone to infection.

Vesicles

Small fluid-filled sacs or blisters on the skin, often caused by infections or allergic reactions.

Wheals

Raised, itchy areas of the skin that are typically red or pink and surrounded by a temporary white border.

Xerosis

Abnormal dryness of the skin, often characterized by itching, flaking, and cracking.