I have a friend with a large rash the interior of the rash is a blackish color resembling a bruise. This area also has scabs on it and has puss that is a clear color sometimes yellow. On the exterior it s a dark red. Around the rash there are red bumps. He is unaware of any unusual activity he s done or any plants or food that could be the culprit.
Hi, It may be contact allergic dermatitis. Kindly consult the dermatologist for the perfect diagnosis and proper treatment. There may be some contact allergen like house dust, house dust mite, pollutant, soap,deodorant, pollens, grass...so on. In your case, some lesions seem to be infected. So, short course of antibiotics should be taken. And antihistamines like levocetirizine be considered. If needed, steroid may be taken in tapering dose. Antibiotic with steroid cream may be applied. Avoid contact with suspected allergen. I hope this would help. Thanks. Chat Doctor.