Hyperacusis in Bell's palsy is due to the paralysis of the following muscle

[Medicoman]

Hyperacusis in Bell’s palsy is due to the paralysis of the following muscle -

• 1. Tensor tympani
• 2. Levator palatii
• 3. Tensor veli palatii
• 4. Stapedius

EXP:

• Stapedius muscle dampens excessive vibrations of the stapes caused by high pitched sounds in order to protect the internal ear.
• If this protective reflex is not elicited it indicates stapedius paralysis and results in hyperacusis.