Fast boy!
The only help I can give you is to go to the doctor and get a CT and or a MRI, that is the only way your going to know what the hell is going on. I just did a ct about a month ago and I did an MRI today get the results tomorrow ( fingers are crossed ). No matter what anyone says to you, you are still going to have that in the back of your mind... I am going through the headache and twitching thing as well, been for the past 2 months. Have you even went to a doctor about this yet? Some people say depression can cause all sorts of strange things, do you think your stressed out? or even depressed? Well I do hope that you find out what is wrong with you, but if you really want to know, GO TO THE DOCTORS......... Keep me posted. I do know that taking tylenol and other kinds of medicines can lead to rebound headaches, and you have beeb taking the meds for awhile, oh and just so you know, a headache from a brain tumor is usually the last symptom....