Without the benefit of a Physical Exam or a photo of the bump when it was there, it seems that you only complain of severe, local pain that keeps you up the entire night. My differential diagnosis would include otitis media, optic or trigeminal nerve pain, temporal arteritis, insect bite or Lyme's Disease. Off to a Dermatologist you would go; if nothing found, off to a Pain Clinic for you. Would not want you writhing in pain much longer. Your personality could easily change and depression, irritability, insomnia, and even suicide ideation are possible if this is laughed off, misdiagnosed, given a prolonged diagnosis, or otherwise misdiagnised. I would not want you to turn into a Chronic Illness/Pain patient.

Margaret Aranda