For the last 2-3 months I have had a swollen gland under
the left side of my chin
. It will get bigger and smaller but has overall gotten bigger over the months. I've also had naseau, night sweats, body aches, fatigue, and some mild swelling on the left side of my face. Now, in the last week I have gotten an itchy, red pimple-like rash over my shoulders, chest, neck and back. I'm not running a fever, but my body feels extremely hot. What could this be? .