Unravelling the Mystery of Psoriasis Dermatitis (PsoDermatitis): A Practical Guide to Recognition and Management.

Historically, psoriasis (Pso) and atopic dermatitis (AD) were considered mutually exclusive diseases due to their activation of opposing immune pathways-Th17 in Pso and Th2 in AD. However, growing clinical evidence and systematic reviews have challenged this dichotomy, demonstrating that both conditions can coexist in the same individual. This paper aims to provide an overview of the nomenclature, epidemiology, genetics, pathogenesis, and clinical features of coexistent psoriasis and atopic dermatitis, whether drug-induced or not. These conditions are also collectively referred to as "PsoDermatitis".