I sometimes get that too. I have cerebral palsy. so I get alot of muscle spasms to various degrees. some are so severe they can (and did in one situation with me) cause bones to break from contractures. anyway my physician is very careful about what pain medications I take for this either over the counter or prescription. The reason being if on any pain medications for any length of time the body builds up a tollorance to that medication then the person needs more of and stronger and stronger medications. to prevent that from happening my family physician has me go off the medications and or changes then when he sees my starting to need more and more so that later on down the road I am not adicted. not all adictions interfere with daily funtioning. There are many adicts that can funtion with in their daily life with no interfeence. For example a friend of mine is adicted to tylenol with codiene. her taking the medication does not interfere with her day. She still holds down a full time job and in fact just got a promotion. Her family life does not suffer either. She cant go without the medication or she will go through with drawal symptoms of hyperactivity, headaches, and feeling like there are spiders crawling up her legs but when she is on the medication she has no hyperactivity and can take care of everything just fine.

for some people like my friend medication adiction is just like self injury -

it does not interfere with daily activities but the person craves and needs it. in order to be able to funtion and get through the day.