it could be psoriasis or a condition called seborrheic dermatitis. both are chronic conditions but have different underlying causes and somewhat different treatments. you can start by using a salicylic acid-based wash and otc hydrocortisone and a salicylic acid or tar-based shampoo. if it does not improve your dermatologist will be able to evaluate and offer prescription treatments to better control the condition.
i have a patch of dry flaky itchy skin on my cheek. it has spread to my ears neck and forehead. is this psoriasis?