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fisherdvm:Sounds like a complicated case. A physician might just treat it conservatively with oral antibiotic, decongestants, and antihistamines.
But if you are a regular diver, and the symptoms are related to a recent dive, more diagnostics might be needed to make sure you don't have rupture of the oval or round window. I am not an ENT, and you should ask your ENT if injury of the inner ear might have cause the fluid accumulation.
To call your symptoms TMJ is absurd.... However, you might not have told your ENT all you have told us here.