<s>[INST] hello i am a 43 year old male with a stiff neck for about 2 weeks . this weekend i used lydacane paches on my neck that i usually use on my lower  back . i also used a tens machine . my neck feels 99 percent better but now i feel pain in my upper back that hurts more than my neck did . i was wondering if it stems from my lower back problems [/INST] Hi,There could be many reasons for this pain. It could be your low back or may be due to bad posture. Use hot packs thrice a day. Strengthen your upper back n improve your posture. Do not use mobiles or laptops for long periods. If using them maintain proper posture. You will be fine. </s>