I had a lipoma removed and my head is still very sensitive to touch. What could be happening?

It's common to have prolonged discomfort is surgical sites that have a lot of nerves - like the head.  Also, the scalp skin is thick and tight, so those factors together can help explain this.  If otherwise uncomplicated this should settle down on its own but you should touch base with your own PS to be sure.  I hope that this helps and good luck, Dr. Alan Engler, Member of #RealSelf500