Toxic epidermal necrolysis (TEN) is an acute and severe skin disease with clinical and histological features characterized by the destruction and detachment of the skin epithelium and mucous membranes.

Eczema is a form of dermatitis. The term eczema is broadly applied to a range of persistent skin conditions and can be related to a number of underlying conditions. Manifestations of eczema can include dryness and recurring skin rashes with redness, skin edema, itching and dryness, crusting, flaking, blistering, cracking, oozing, or bleeding.