It's so interesting we're experiencing the same thing. My whole family's telling me I'm making up the symptoms, but I KNOW I still have them. That tingly feeling is not to be confused with anything else, it's a completely independent movement from your body. Also, whenever the pinworms come back, that annoying mouth odour comes back too (never, ever had any kind of mouth problems in my entire life!), my wisdom teeth start going crazy and they keep pushing and giving me inflammations, my lips get chapped (never read about such a symptom, but it happens), my nose itches like crazy, my stomach hurts, and there are some other less-than-pleasant-to-talk-about symptoms as well. I so wish I was dreaming the whole thing, but I know that's not the case.
Please, tell me more about what's going on with you. When did you get them, what were you treated with, how intense are your recurring infections, what makes you think you still have them? You must be so confused about the doctor's visit. It's both relieving and annoying at the same time to hear him say he didn't see anything. Then what the hell is it you're feeling?