<s>[INST] I have pain under right arm pit since two months. It spread to left arm pit also. Doctor prescribed gabapentin for cervical spondylytis. Some times muscles just below the arm become tight and some time free. I am also suffering from anxiety. the arm pain not responding to ibu profin [/INST] Hi, If to been diagnosed with CS and on medication now, then I will advise you to start doing some neck muscle strengthening exercises as in CS there might be a change in the normal curvature of the cervical spine which may lead to nerve entrapment and lead to abnormal nerve functions of which you are facing some. Try even the stretching exercise for the upper limb as a whole. If you think you need a help of guiding the exercise prescription you can meet up a physiotherapist for the same and get some learning. Most cases have responded well with conservative therapy in my clinical experience of 12 years. Also, research supports the effect of physiotherapy guided exercises in CS. Hope I have answered your query. Let me know if I can assist you further. Jay In Chat Doctor.  </s>