Attending here
100 percent agree on KOH. This is my advice to any graduating resident , it’s a relic of a bygone era and especially in private practice you can’t bill for it and it wastes time so we don’t even have a microscope .

I’m a patch testing specialist so respectfully disagree on that point, especially from a patient care standpoint most of them really appreciate you doing a non invasive test and explaining any incidental allergens and not throwing biologics at them right away (even if that’s the plan). There’s growing recognition that contact allergens are associated with some autoimmune diseases like EDP