@fdouglass

See a Neurologist who specializes in headache syndromes.

They are multifactorial and can have many things involved.

You ever get checked for allergies before you caught a virus? Could have exacerbated underlying inflammation from allergies.

The carbamazepine was most likely calming your nerves (nervous system hypersensitivity) which was likely also addressing some type of anxiety.

If the virus left some residual inflammation in the tissue irritating the nerves this can also happen. You don’t need any type of infection to have low level inflammation of the nerves.

Did anyone try you on an oral steroid for inflammation?