+22 Why Is My Hair Itchy 2023. It can have several causes, such as seborrheic dermatitis, allergic reactions, eczema, psoriasis or fungal infection with malassezia. Scalp rash (looks dark on brown and black skin, and lighter on white skin) hair thinning and hair loss can occur with seborrheic dermatitis.
Like psoriasis, it can affect any part of the body, including the scalp and the back of the head. Redness and/or inflammation on the skin. If your scalp is dry and itchy and you see flakes on your hair or clothing, you may have dandruff.
