Knowra Dermatitis Dermatitis Dermatitis is inflammation of the skin that commonly causes redness, itching, swelling, or scaling. It includes several patterns with different causes, such as irritants, allergens, and immune responses.
Eczema : A group of inflammatory skin conditions marked by itching, dryness, and recurring rashes. The word is often used interchangeably with dermatitis, especially for chronic itchy forms.
Irritant contact dermatitis : Skin inflammation caused by direct damage from substances such as detergents, solvents, or repeated wet work. It is a common form caused by direct barrier injury rather than allergy.
Patch test : A diagnostic test that applies suspected allergens to the skin and checks for delayed reactions. It can identify the specific allergen responsible for allergic contact dermatitis.
Psoriasis : A chronic immune-mediated disease that produces sharply defined, thickened plaques with scale. Its characteristic plaques can resemble chronic dermatitis but usually have a different pattern.
Sleep deprivation : A condition caused by insufficient or disrupted sleep, impairing alertness and other bodily functions. Nighttime itching can repeatedly interrupt sleep in chronic dermatitis.
Skin barrier : The outer protective function of skin that limits water loss and blocks irritants, allergens, and microbes. Barrier disruption makes skin more vulnerable to irritants and inflammation.
Allergic contact dermatitis : A delayed skin reaction to an allergen after prior immune sensitization. This subtype arises when skin contact triggers a T-cell-mediated immune response.
Avoidance therapy : Treatment that reduces or prevents exposure to a substance causing disease. Avoiding a confirmed irritant or allergen can prevent repeated flares.
Seborrheic dermatitis : A chronic inflammatory skin condition affecting oily areas, often with flaky scale. It is a named dermatitis subtype distinguished by its distribution and scale.
Excoriation : A superficial skin injury caused by scratching or rubbing. Scratching inflamed skin can create breaks that hurt and invite infection.
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