TPO and psoriasis: This association between these two diseases draws physicians' attention (Endocrinology and Dermatology) and researchers as it profoundly impacts medical research and patient care in the view that it better to include thyroid ultrasound and thyroid antibody, especially TPO Ab and thyroid function follow-up in the evaluation of a patient with psoriasis so that we can diagnose early and give suitable treatments for thyroid function abnormalities.