Im 18 and used to be a very healthy, happy outgoing person. Now I am always tired, weak, sore, my muscles and joints are stiff and sore, I get major headaches, ear aches and pain behind one eye. I have lost about 4-6 kilos and my appetite and thirst have increased.I get nausea and stomach pains. My skin is extremely dry and very very itchy. The doctors have no idea whats wrong and the symptoms are getting worse. Please help me. I have come looking on the internet as a last resort!