Hello! I read your question and understand your concern. I would like to explain that the cerebellum is not related to the headache you have. The brain itself doesn t hurt, but the structures surrounding it like vessels, muscles and nerves hurt. I think your pain is caused by contractions of the scalp muscles. It may be caused by a wrong position of the head during day and night, stress or a cervical disc problem. I would recommend to consult with the neurologist, have a good physical examination and a cervical column xray. I would recommend a lot of physiotherapy for the pain and pain killers. A good pillow would be very helpful. Hope to have been of help! Greetings! Dr. Abaz Quka