Prevent autoimmune flare-ups this summer with the following treatments. Summertime Flare-ups More than 80 diseases occur as a result of the immune system attacking the body’s own organs,1 and ongoing research shows that temperature changes and sunlight can increase flares or flare-ups that exacerbate some of these conditions. As temperatures rise during the summer months and more individuals participate in outdoor activities, multiple sclerosis (MS), lupus, psoriasis, dermato