From the face, how to explain the eardrum? There is one in each ear, which is used for folklore research.

Physiologically speaking, the eardrum is a nest of gold and silver, and it is a warehouse for hiding gold and silver treasures; As the saying goes, "grain is stored in the front warehouse, chaff is stored in the back warehouse, and clothes are stored in the ear." Some people are considered "lucky" to have a small hole in front of their ears after they are born.

From a medical point of view, auricular fossa refers to congenital preauricular fistula, which is a common congenital external ear disease in clinic. It is the remnant of incomplete fusion of auricle primordia of the first and second branchial arches, and its genetic feature is autosomal dominant inheritance.

Extended data:

The opening of the tube is mostly located in front of the foot of the helix, and a few can be located in the triangular fossa of the auricle or the concha cavity. Congenital preauricular fistula can be divided into simple type, infectious type and secretory type. Generally asymptomatic.

When pressed, a little thin mucus or milky white sebum may overflow from the fistula, causing local itching and discomfort. Asymptomatic or non-infected people may not be treated. Local itching and secretion overflow should be surgically removed.

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