You are very kind to respond in detail. I do take stress Rx and Gabapentin which helps a bit, but with side effects. My M.D. is checking with pain clinic in nearby university medical center regarding the possibility of radio frequency ablation being used for trigeminal nerves. I was in hospital four days before being diagnosed & then given Valtrex in large doses. The blistering on my forehead/eye/scalp didn't pop out until days of severe unilateral headache. I was on IV Demerol but my family asked for an ophthalmologist consult because I kept saying my eye was the problem. He diagnosed me the minute he saw me. Then I was moved to isolation. My eye wasn't dilating properly for months so I could not tolerate light.......and driving! I consulted a neurosurgeon who offered an experimental brain surgery. I declined that !! I take Rx for sleeping and use frozen gel pack on my head at night or any time itching/pain gets out of control.