Please help!!! my fiance is feeling very weak on the left hand side of his body. The pain has started about 3 years ago, but now has worsen, and sometimes can’t sleep at night. The symptoms are pain on his neck, shoulder, arm, headaches, left eye redness, and weakness on the left part of his body. He went to several doctors and did a lot of exams, but no one had said nothing. He thinks that the problem is in his bones, and also he thinks it might be cancer. Could someone give me some advice to what kind of doctor should I take him to? Should I take to a bones doctor, what kind of exams should he take. Please help!!!