Can you tell me about a pain killer that you don't withdraw from ?

Not really: There are neural modulators that you may not have withdrawal symptoms from, but 'pain killers' gen mean narcotics, tramadol, or even NSAIDs like ibuprofen.Any of these can have a 'withdrawal' syndrome, though some are more severe than others & all have potential side-effects with long-term use.Consult your dr. to determine if any are right for you.

All can potentially: have withdrawl symptoms. You can tryheat ice and exercises to help the pain.