Itchy scalp can be caused by eczema, seborrheic dermatitis, ringworm, etc. In addition, if there are head lice, there will also be itchy scalp symptoms. 1. Eczema on the head: Eczema on the head is usually associated with contact with shampoos and conditioners that contain allergic substances, and the main symptom is that the scalp will appear red spots and itchy symptoms. 2. seborrheic dermatitis: seborrheic dermatitis is a relatively common chronic inflammatory skin disease, the main symptom is that dandruff will increase, usually accompanied by scalp itching. 3. Tinea capitis: Tinea capitis is mainly caused by fungal infections, usually with obvious itching symptoms. 4. Head lice: If you don’t pay attention to the hygiene of your head, and head lice appear on your head, these parasites will bite the local area, and the scalp will be itchy as a result. If you have long-term itchy scalp symptoms, it is recommended to go to the regular hospital in time, by the doctor for scientific treatment, so as not to delay the condition.