I read today in Cancer Compass that survivors get premature aging. I have jokingly called it that, but now it's supported by research. I have a long laundry list of drug sensitivities and allergies. Most of the drugs that treat TN were ruled out before my diagnosis. The most common symptom is itching all over. It keeps me from being addicted but also from being treated. I too had endometriosis and when recovering from a life saving hysterectomy I learned of my allergy to morphine. That rules out everything from tramadol to dilaudid. I am allergic to carbamazepine too. That rules out the whole family. I take amitriptyline and so far so good. Last night I learned that barometric pressure is one of my triggers and I experienced eye pain for the first time. I felt so helpless, but it went away when pressure went down.