<s>[INST] my husband is 58, has smoked for 40 years, plus, and has been coughing up blood, er doctor found a spot on his lung, and he has unexplained back pain for a year, the coughing up blood is a year too, I am worried about him, he drives a truck 13 hours a day, thank you [/INST] Hi, From history it seems that he might be having pulmonary tuberculosis giving rise generalized weakness, low fever and fatigue. Having this type of wasting disease this type of problem is common with strenuous work like long truck Chat Doctor. Consult physician and get examined and go for investigation for proper diagnosis. He might require well nourished diet with high protein food. Give him multivitamin supplements. Ok and take care. </s>