
Erythematous conditions
- redness of the skin produced by congestion of the capillaries; condition may result from a variety of causes.
- Redness of the skin.

Toxic erythema

Erythema multiforme
- skin and mucous membrane disease characterized by an eruption of macules, papules, nodules, vesicles, and/or bullae with characteristic bull's-eye lesions usually occurring on the dorsal aspect of the hands and forearms.

Erythema nodosum
- erythematous eruption commonly associated with drug reactions or infection and characterized by inflammatory nodules that are usually tender, multiple, and bilateral; these nodules are located predominantly on the shins with less common occurrence on the thighs and forearms; they undergo characteristic color changes ending in temporary bruise-like areas; this condition usually subsides in 3-6 weeks without scarring or atrophy.

Rosacea

Lupus erythematosus
- chronic form of cutaneous lupus erythematosus in which the skin lesions mimic those of the systemic form but in which systemic signs are rare; characterized by the presence of discoid skin plaques showing varying degrees of edema, erythema, scaliness, follicular plugging, and skin atrophy; lesions are surrounded by an elevated erythematous border; the condition typically involves the face and scalp, but widespread dissemination may occur.
- A chronic inflammatory connective tissue disease marked by skin rashes, joint pain and swelling, inflammation of the kidneys, inflammation of the fibrous tissue surrounding the heart (i.e., the pericardium), as well as other problems. Not all affected individuals display all of these problems. Also called systemic lupus erythematosus.

Other specified erythematous conditions

Ritter's disease

Other specified erythematous conditions
- widespread involvement of the skin by a scaly, erythematous dermatitis occurring either as a secondary or reactive process to an underlying cutaneous disorder (e.g., atopic dermatitis, psoriasis, etc.), or as a primary or idiopathic disease; often associated with the loss of hair and nails, hyperkeratosis of the palms and soles, and pruritus.

Unspecified erythematous condition
- widespread involvement of the skin by a scaly, erythematous dermatitis occurring either as a secondary or reactive process to an underlying cutaneous disorder (e.g., atopic dermatitis, psoriasis, etc.), or as a primary or idiopathic disease; often associated with the loss of hair and nails, hyperkeratosis of the palms and soles, and pruritus.
- redness of the skin produced by congestion of the capillaries; condition may result from a variety of causes.
- Redness of the skin.