What are the symptoms of erythema skin disease?

Erythematous skin disease refers to a skin disease characterized by polymorphic red macula, which is divided into inflammatory erythema and non-inflammatory erythema. Inflammatory erythema is mainly characterized by local skin temperature increase, skin swelling, skin elevation and other symptoms. Non-inflammatory erythema is mainly characterized by local skin temperature normal, erythema fading after pressure and other symptoms.