Increasing temperature, UV exposure and small particle air pollution are associated with increased hospitalization for pemphigus. Patients with pemphigus may benefit from avoidance of these potential environmental triggers.
Ren, Z., Hsu, D., Brieva, J., & Silverberg, J. I. (2019). Association between climate, pollution and hospitalization for pemphigus in the USA. Clinical and experimental dermatology, 44(2), 135-143.(1)