I am only 20 years old. I am having a very serious problem. I am having headache after every 3 4 days and sometimes i feel ache in my hands and legs. This problem is from very long time. I am also having weakness problem. My body is very weak and skinny. People make fun of me because of my skiny body. I dont listen to them but sometimes i really think of that I should make my health better. Please help me...