Rustling sound when pressed under the ear may be related to foreign bodies in the ear canal, cerumen impaction, and temporomandibular joint syndrome.
1. Foreign body in the ear canal: When a foreign body such as hair or insect carcasses entering the ear canal is close to the tympanic membrane, pressing it under the ear will cause it to touch the tympanic membrane and produce a rustling sound.
2. Cerumen embolism: when cerumen is over-secreted in the external auditory canal and is not discharged properly, it can lead to the accumulation of cerumen in the ear canal to form an embolism. When the cerumen embolism increases and comes into contact with the tympanic membrane, it can be pressed underneath the ear to squeeze and rub the tympanic membrane, resulting in a rustling sound.
3. Temporomandibular joint syndrome: the cause and mechanism of this disease are not yet clear. The condyles can be displaced when pressed under the ear, producing friction in the joint cavity, which is manifested as a rustling sound.
When there is a rustling sound when pressed under the ear, it is recommended to consult a doctor for a systematic examination in order to clarify the cause of the disease and treat the symptoms.