Erythema

Erythema is redness of skin from vascular dilation, with diverse causes: infection (viral exanthem/strep), drug reaction, physical (sunburn/heat/cold/UV), autoimmune (lupus/dermatomyositis), vasculitis. Treatment: identify/treat cause; topical corticosteroids; oral antihistamines; emollients; cool compresses; stop culprit drug; treat infection; biopsy if persistent/atypical; evaluate systemic disease (CBC/ESR/CRP/autoimmune serology); follow-up dermatology/internal medicine.

Common Symptoms

Skin redness; by infection/drug/physical/autoimmune

Causes and Pathogenesis

Vascular dilation (inflammation/infection/physical/immune) causes erythema.

Treatment

Identify/treat cause; topical steroids; antihistamines; biopsy if persistent

Preventive Measures

Avoid triggers; sun protection; treat underlying disease.

Department to Visit

It is recommended to visit the Dermatology/Internal-medicine department; an appointment can be booked on this platform before the visit.

Warm reminder: The above information is for health science reference only and cannot replace professional medical diagnosis. If you have related symptoms, please seek medical attention at a regular hospital promptly.