Generalized pruritic rash including palms. No history of contact with anything different, no constitutional symptoms. No meds. Started on ankles and forearms spread to trunk , on palms. Over 2 weeks. Spreading/ getting worse. Excoriated erythematous papular type eruption. Put on topical steroid and oral antihistamine without improvement. Rash on palms doesn't look targeted. Not copper like in syphilis and present only 2 weeks. . I'm stumped. Going to do a biopsy but looking for rule out ideas.....