Los Angeles has been in a extreme heat wave the last few weeks. I have been out in the sun the last few weekends and have slathered on 85 SPF lotion. I don't get burned but I break out in a rash and almost tear my skin off from scratching. The itching and rash start a few hours after the sun exposure and last for 3-4 days then goes away. I put lots of lotion on after my shower so I know its not dry skin. My question... does Sjogren's effect sun sensitivity? I have not been diagnosis with Lupus. I have Hughes and Sjorgrens.