[1] Dowlatshahi, E. A., Wakkee, M., Arends, L. R. & Nijsten, T. The prevalence and odds of depressive symptoms and clinical depression in psoriasis patients: A systematic review and meta-analysis. Journal of Investigative Dermatology 134, 1542-1551 (2014).
[2] Fleming, P. et al. The prevalence of anxiety in patients with psoriasis: a systematic review of observational studies and clinical trials. Journal of the European Academy of Dermatology and Venereology vol. 31 798-807 (2017).