Letrozole and dermatitis?

Hi all - I have been on letrozole for about 10 weeks now, following a lumpectomy and radiation for hormone positive ILC. Over the last couple of weeks I have developed a terribly itchy red rash over my legs and arms.  My GP is investigating the cause, but I wondered if anyone else had experienced this as a possible side-effect of letrozole?  I have seen other posts about rashes being a side effect of other AIs but not so much letrozole?  thanks!