Patch Me If You Can

Managing undifferentiated dermatitis requires balancing clinical intuition with practical diagnostic strategies. While some advocate for a "clear, patch test, avoid, treat" protocol to identify specific allergens before initiating systemic therapies like dupilumab, others argue that immediate systemic intervention is often more efficient for patients, particularly when access to patch testing is limited. IL-13 inhibitors do not effectively treat allergic contact dermatitis, making them useful diagnostic tools to rule out atopic conditions. Effective management involves switching to hypoallergenic products like Vanicream or CeraVe to eliminate potential irritants, utilizing wet wraps to provide immediate relief for severe inflammation, and carefully monitoring patient responses to systemic treatments. When patients fail to show dramatic improvement within six to eight weeks, clinicians must re-evaluate the diagnosis rather than continuing ineffective therapies, as persistent dermatitis often signals an underlying contact allergy or other non-atopic factors.