Itchy ears are mostly caused by allergies, chronic eczema and ear infections. 1. Allergy: itchy ears, if combined with the outer ear canal rash and other manifestations, it may be allergic to skin care products, jewelry and other things, and then due to the body of antibodies triggered by the perverse reaction. 2. Chronic eczema: if in addition to itchy ears, there are rashes, oozing and redness, etc., may also belong to the chronic eczema, mostly associated with bad habits and do not pay attention to clean. 3. Ear infections: including otitis externa, otitis media, etc., which in addition to the performance of itchy ears, there are redness, swelling, ear blockage, pus, tinnitus and other symptoms. If you have persistent itchy ears, it is recommended that you consult a doctor for a clear diagnosis.