<s>[INST] Im 32 year old and have had a needle in my butt muscle since I was two years old. I have no pain or symptoms at all where the needle got stuck. I'm having other neurological symptoms wich doctors can't find a reason for. Can a foreign object cause other problems than local pain or infection? [/INST] HelloWelcome to HCMI understand your concern.its rare for the needle to cause neurological symptoms.If at all if the needle is getting abutted in the nerve and nerve has got injured,there are very rare chances of you getting these symptoms from the needle.I would advice you to undergo MRI to rule out disc protrusion or disc prolapse.Hope you are happy with the answer.Thank you </s>