I am almost 30 yrs old and weigh about 155.  Where I live we are infested with buffalo gnats and have gotten many bites which are horrible to deal with.  A couple days ago I had a pain in the back of my head at the bottom of the skull and thought I had received another bite but found that there was a small bump there.  It hurt when you pressed on it and the pain has gotten worse.  You do not even have to press on it anymore to feel the pain.  What could this be?
HI, thanks for using Chat Doctor It is possible that area that was bitten has been infection. This can sometimes occur with areas with itchy bites, bacteria can be introduced into the skin. Infection can result in the formation of a painful lesion such as an abscess. It may be best to have the area looked at by your doctor. If it is an abscess, then it may need incision and Chat Doctor. Antibiotics may also be needed. I hope this helps