I ve had a reoccurring sore throat for two years. I ve recently noticed black spots on the right side in the back of my throat. I also suffer from chronic joint pain and fatigue. I m 28 yrs old, have a healthy diet and was a light smoker until recently. Any advice? I m starting to get really worried as I ve been to several doctors and have been turned away by all without diagnosis. One Dr suspected psoriatic arthritis. Yoga seems to help with the joints but all other symptoms are still present. I have a hard time sleeping, at night the skin on my legs gets very itchy???