What it is
In atopic dermatitis, Th2-skewed responses (IL-4, IL-13, IL-31) dominate. In psoriasis, the IL-23 / Th17 / IL-17 axis predominates.
These pathway differences explain why systemic treatments target different cytokines for different conditions.
Why it matters
Distinguishing immune signatures is central to understanding why eczema and psoriasis look and behave differently despite both being inflammatory.
