Since a long time I am not feeling like working too much which once I used to do. I always feel like energy less and seems nothing is there into my body. Sometimes I also feel nauseated and that makes it all the tougher for me to even eat anyhting. I do not what is the real problem with me. I just wish to ask that Nausea As A Symptom is of which sickness? Also mention different meausres for this problem to end.