i had an ingrown toenail. the doctor doesn't laugh at you for it. he may try to rip you off though (mine did, the asshole).
if it is a long term one (one that will not go away when you cut it) what they do is this. at least they did this for me.
1. put you on a course of antibiotics to clear up the infection around the nail.
2. anesthatize the toe, then cut the edge of the nail out
3. put acid on the edge of your toenail to kill off all the cells that would let your toenail grow out sideways again.