Itchy ears are a clinical symptom that is commonly caused by eczema of the external auditory canal, chronic otitis externa, and fungal diseases of the external auditory canal. Ear itching can not be judged by the early symptoms of which disease. 1. Eczema of the external auditory canal: due to internal and external stimulation of a variety of factors, resulting in allergic polymorphic dermatitis in the external auditory canal, acute eczema: the affected area is itchy, most of the burning sensation, digging the ear after the outflow of yellow watery secretion, solidification of the formation of a yellow scab; subacute eczema: itching, less exudate than the acute stage, with scabs and flaking. Chronic eczema: severe itching in the external auditory canal, skin thickening with flaking. 2. Chronic otitis externa: bacterial infection causes chronic inflammatory reaction of the skin and subcutaneous tissues of the external auditory canal, which can cause a small amount of secretion to flow out, and irritation of the skin can also cause symptoms of ear itching. 3. Fungal disease of the external auditory canal: Candida, mold and other infections may cause chronic inflammation of the external auditory canal, or the skin of the auricle, which can also cause itchy ears. There may be other reasons for itchy ears, you need to go to the hospital in time to check and clarify the cause.