Hello Dr. Andrew Rynne, I wanted to ask if you can help me with my search for what is causing my intermittent days of feeling lethargic, pressure on my lungs, very sensitive skin (feels like a sunburn), knees & feet ache, sweaty fevers at night along with freezing, my heart feel like it s beating hard and I can t focus. It doesn t happen everyday, but sometimes it will occur several days in a row then give me a break for a week or so. I have had this condition for at least 5 years, it wasn t as frequent years ago, but it seems to have become more frequent over time. My doctor says it must be some sort of rare disease that he doesn t know of. It seem most like Lupis without the butterfly like rash, instead I have a rash that covers my body mostly around my waist where it s solid. The rash is not raised, it doesn t itch or hurt, I just look like I have a skin disorder. This all started a couple years after I went through cancer and surgery. I suspect it has something to do with it, but can t figure out how to control it. It is affecting my work and home life. If you have any advise or suggestions I would absolutely appreciate it. Thank you, Tom Calleja