autosomal dominant nonsyndromic deafness 9

An autosomal dominant nonsyndromic deafness that is characterized by postlingual onset in the second decade with high frequency progressive hearing loss and has_material_basis_in mutation in the COCH gene on chromosome 14q12.

Signs and symptoms

• Abnormal vestibulocochlear nerve morphology
• Vertigo
• Cochlear degeneration
• Postlingual sensorineural hearing impairment
• Tinnitus

Also known as: DFNA9; autosomal dominant deafness 9