I had 2 mastectomys 2 years ago and a left ANC (Cancer both breasts). Since then I've had 4 discrete episodes where the skin on my left arm felt tight, and has then come out in a rash the next day. It's discrete and blotchy, no scaling, not particularly raised, and it spreads up and down the arm over the next few days. The last 2 episodes I've had a day of feeling quite viral when the rash came out (but no temp). I'm currently having my 4th episode and the rash has now spread onto the left half of my body front and back.
One previous episode I was scanned and I don't have an axillary DVT. It's not cellulitis and it's not urticarial.
After about a week it all settles down then I'm fine for several months. I don't have any lymphoedema in that arm. My breast team were baffled when I described it to them.
Do you have any ideas? (I would go and show them, but am away on holiday)