I know this is an old thread but I was reading about Hyperacusis on a bunch of websites seeing all what they said and I found this:
"Anti-seizure drugs (for example gabapentin, topiramate, levetiracetam) may be effective in persons with hyperacusis due to irritable neural pathways. These may be working on similar circuitry as is helpful for migraine. Generally speaking,
seizure medications that work for migraine are also mood stabilizers, so they may also be helpful there."
https://dizziness-and-balance.com/disorders/hearing/hyperacusis.htm
I can't say it is much of any help at this point but I thought I might as well post it.
"
Chemical name:
Levetiracetam
- Proprietary names: Keppra®
- Data: Two small prospective open-label studies suggested efficacy of levetiracetam in migraine prophylaxis (Brighina et al. 2006; Pakalnis et al. 2007).
- Class: Anticonvulsant.
- Mechanism of action: Uncertain. Appears to inhibit burst firing and hypersynchronization of neurons.
- Pharmacokinetics: Rapid and complete absorption. Half-life 6-8 hrs. Plasma protein binding <10%.
- Metabolism: Enzymatic hydrolysis, though not extensively. Excreted in urine.
- Precautions: Caution in patients with renal dysfunction. Avoid abrupt discontinuation.
- Dosing: Start at 500 mg BID.
- Advantages: Does not interact significantly with other medications.
- Adverse effects: Fatigue. A small number of patients experience incoordination or behavioral abnormalities.
- Comments: We occasionally prescribe levetiracetam in migraine prophylaxis. The data supporting its use are emerging. "
I think this is meant as a temporary relief. And that we have something wrong going on within some circuitry in our brain. However, if that is so, then what exactly caused it?