Sweating scalp itch may be sweat stimulation, or consider seborrheic dermatitis, scalp folliculitis and other diseases. 1. Sweat stimulation: due to sweat has a certain degree of irritation, when sweating will cause stimulation of the scalp, coupled with the cleaning is not timely it will appear itchy situation. If such a situation occurs, it is a normal phenomenon. 2. Seborrheic dermatitis: the cause of seborrheic dermatitis is not yet clear, may be genetic, microbial infection, improper diet, low immunity and other factors. Patients will experience itching, flaking and other symptoms, and when sweating stimulates the scalp, itching symptoms worsen. 3. Scalp folliculitis: scalp folliculitis may be caused by bacterial infection, local trauma, low immunity, excessive sweating and other factors. Patients will appear red papules, itching, slight pain and other symptoms, when sweating can aggravate the symptoms of the disease. There are many other reasons (such as fungal infections, etc.) that cause patients to sweat and itchy scalp, and they need to go to the regular hospital in time to find out the cause of the disease.