Stuck on a problem? Get great tutoring at an affordable price with Chegg. Click here to join and get your 1st 30 minutes Free!

Eczema

From Biology-Online Dictionary
Jump to: navigation, search

Eczema

(Science: dermatology) a pruritic papulovesicular dermatitis occurring as a reaction to many endogenous and exogenous agents.

It is characterised in the acute stage by erythema, oedema associated with a serous exudate between the cells of the epidermis (spongiosis) and an inflammatory infiltrate in the dermis, oosing and vesiculation and crusting and scaling and in the more chronic stages by lichenification or thickening or both, signs of excoriations and hyperpigmentation or hypopigmentation or both. Atopic dermatitis is the most common type of dermatitis.

Synonym: eczematous dermatitis.

Origin: gr. Ekzein = to boil out