Not Feeling Well? – Headache
Cause: Headaches are caused by overactivity of or problems with pain-sensitive structures in your head. Chemical activity in your brain, the nerves or blood vessels surrounding your skull, or the muscles of your head and neck can play a role in primary headaches.
Symptoms: Sensation of tightness or pressure across your forehead or on the sides and back of your head. Tenderness on your scalp, neck and shoulder muscles.