Thanks everyone. My dental hygienist is very friendly and chatty, so I like the idea of telling her it's for something else (in the case of lamictal) if she starts up a discussion about epilepsy. (Thanks for that idea, Eliza Jane). But I will try to head it off first by handing her a written list. It's one of those situations where everyone hears everything and people are talking about the conversation going on in the station next to them, so if she starts asking about a medication, I don't necessarily want everyone in the office to hear. But I do hear all of you (and can accept) that I need to let them know.