What is the term for a smaller than normal pinna?

The term for a smaller than normal pinna is microtia. This condition is characterized by an underdeveloped auricle (the outer ear), which can vary in severity. In mild cases, microtia may present as a pinna that is simply smaller than average, while more severe forms can lead to significant malformations.

Understanding microtia is important in audiology and hearing aid dispensing because individuals with this condition may also experience hearing loss due to associated problems in the ear canal or middle ear structures. Recognizing and addressing microtia can help in providing appropriate auditory solutions.

Atresia refers to the absence or closure of the ear canal, while anotia indicates the complete absence of the external ear. Stenosis describes a narrowing of the ear canal. While these terms relate to ear and hearing abnormalities, they do not specifically denote a smaller size of the pinna. Hence, microtia is the correct term for a smaller than normal pinna.