So sorry to see you join our exclusive little club, @LeonieJ .... and a shame to read of your rash. :( I hope the steroids can rectify it. It may be worth trying a 'generic' version of Arimidex as some coatings on the tablets CAN cause issues .... the active ingredients remain the same. (I was on Arimidex until they started charging $5 on top of the PBS fee) so swapped to Anastrozole (the same med that is actually the name of the active ingredient) and have had no problems.
I put 'arimidex rash' into the search area of BCNA & chose 'newest' and here are the results ....
https://onlinenetwork.bcna.org.au/search?domain=all_content&query=arimidex%20rash&sort=-dateInserted&scope=site&source=communityI am on Anastrozole/Arimidex & have no skin issues ..... but according to the US Breastcancer.org site, a rash CAN be a side effect .... (You may need to 'join' to access the link. It is a reliable, reputable site.)
https://www.breastcancer.org/treatment/hormonal-therapy/arimidex take care xx
Feel free to jump onto this thread re other areas of the forum that may take your interest .... even some fun posts xx
https://onlinenetwork.bcna.org.au/discussion/23477/a-big-welcome-to-all-our-new-members#latest