"i was taking percocet for facial and scalp neuralgia - very similar to trigeminal neuralgia 2 (tn2 or atn) but instead of just face, nearly my whole scalp can have nerve pain. i was referred to a pain control specialists who initially put me on nucynta er. it was far less effective then the percocet. since i have a history of problems with extended release (er) versions, i begged them to let me try the ir version instead. viola! real pain relief. i&#039;ve been able to lower my overall monthly allotment of pills. i feel so blessed to have such good pain control."