Microauricular malformation and auricle dysplasia can generally be divided into three grades. First grade, the auricle is smaller than the normal ear, with no obvious deformity, which may be accompanied by external auditory canal stenosis and middle ear malformation; Grade two, the auricle has no normal shape, and there are cord-like vegetation with cartilage under it, which is often accompanied by complete atresia of external auditory canal and middle ear malformation, which is more common; Grade ⅲ, with incomplete and irregular auricle, accompanied by maxillofacial deformities such as external auditory canal, middle ear, facial nerve and inner ear, characterized by facial paralysis, nervous deafness and mandibular dysplasia.
Accessory ears or multiple ears, in addition to the normal auricle, have auricle-like structures or vegetation in front of the tragus, cheeks or upper neck, which may be accompanied by maxillofacial dysplasia.
Fan-shaped ears, also known as fan-shaped ears and flat ears, the auricle obviously leans forward, and the cranial ear A (a degree between the back of the auricle and the side of the skull) increases, which has no effect on hearing.
Giant ears and auricles are over-developed, which is characterized by the enlargement of the whole auricle or a certain part of the auricle. The latter is more common. In addition, there are cat ears, ape ears, hidden ears and so on.