I think he needs to see two diff docs. One is a dermatologist, who can decide if it is indeed a cyst and in fact remove it, too. Now, the other doc would be one who handles migraines, and they can give better meds than just over-the-counter stuff your boyfriend takes now. The fact that it has worsened, the migraine doc can explain that and help with just the whole thing as it is for him now. But keep in mind a cyst in that location is quite common, probably a cyst that came from an oily skin blockage, I've gotten a few myself on my head, and they just cut them out of there, sew it up, send it to the lab, and later take the stitches out. And I had a girlfriend in college who had migraines, they really took her down when she had them, and she saw several docs for various things, especially the migraines. She was number one in a very large university freshman class, so apparently getting the right doc for migraines is a good idea.