I am working in IT sector and sit before computer or smartphone or Tv 12-14 hours on daily basis. For last 15-20 days I am not able to concentrate on my work due to mild headache and head heaviness which starts from back of my head. I also observed my neck remain stiff and slightly pain in arm and neck. Someone suggested me in your panel to do stretch exercise of neck. I am doing exercises but still not feeling good, I am unable to concentrate on work. Would appreciate if you help me. I consulted general physician but nothing worked. Which specialist doctor should I approach for this problem. Thank u.