The causes of always itchy ears include localized ear lesions such as ear eczema, ear skin inflammation and other conditions, and some patients have itchy ears due to systemic lesions and other factors. You should consult a doctor in a timely manner to identify the cause of the disease and actively treat it. 1. Localized ear lesions: eczema of the external auditory canal, seborrheic dermatitis, fungal disease of the external auditory canal, etc., which stimulate the skin of the external auditory canal and increase the secretion, resulting in the symptom of itchy ears. 2. Systemic lesions: diabetes mellitus, uremia need hemodialysis patients, due to the impact of the primary disease, can also cause local itching in the ear, the need for the patient’s primary disease treatment. In addition, the ear into the foreign body, may also be the cause of itching, but this situation does not generally occur for a long period of time, when they find themselves in the ear persistent itchy symptoms, it is recommended that patients seek medical attention in a timely manner.