Painful and itchy ears may be caused by chronic diffuse otitis externa, eczema of the external auditory canal and papilloma of the external auditory canal. 1. Chronic diffuse otitis externa: generally due to bacterial and viral infections caused by chronic inflammation of the skin, due to the inflammatory factor stimulation of the ear canal sensory nerves may appear inside the ear and itchy and painful situation. 2. Eczema of the external auditory canal: Eczema of the ear canal belongs to allergic diseases, eating or contacting allergens, resulting in allergic inflammation, causing pain and itching inside the ear. 3. papilloma of the external auditory canal: it may be due to improper ear digging damage to the skin of the external auditory canal, papillomavirus in the damaged area stimulate normal tissue papilloma-like changes in the skin of the external auditory canal to form papillomas of the external auditory canal, which can be manifested as a painful and itchy sensation inside the ear. Patients with painful and itchy ears should go to regular hospitals in time to find out the cause of the disease and take targeted treatment under the guidance of professional doctors.