A 27-year-old male presents with a 3-day history of a severe burning itch over his hands associated with localized blistering and similar although less severe changes on his feet. He is on no medication and has no exposure to allergens or irritants. He is unaware of any triggering factor.

What is the probable diagnosis? *This image based case is from Docplexus editorial team for educative purpose only Source: Cases in Dermatology