--the side effect lists are not all-inclusive, just what the maufacturer is obligated by statute to include. Sometimes, some of the most common side-effects of drugs are not even mentioned.

In the case of Topomax, among the boards I frequent, many of the things listed there have been noticed by some users--especially the possibility of increased burning/stinging symptoms--but two that are not mentioned there are an increased propensity for glaucoma (though many opthamologists are quite aware of it), and decreased appetite/weight loss. In fact, Topomax is now being marketed as a appetite suppressing weight loss drug in some realms!

I think it's at least worth a discussion with the doctor and maybe a taper/trial period off the drug to see if it is contrbuting to the symptoms.