LAUSR

Journal Compilation © 2020 Acta Dermato-Venereologica. doi: 10.2340/00015555-3451 A woman in her 40s with no significant medical history was referred for recurrent itchy and erythematous plaques on her trunk and the outer side of her arms and thighs, exclusively occurring after scuba diving (Fig. 1). She had been diving for 20 years and had experienced these symptoms for 8 years. The episodes resolved spontaneously within a few hours of finishing a dive. She usually ate wheat-based food before diving. After an initial diagnosis of symptomatic dermographism, she noticed a partial improvement if she took H1-antihistamines before diving. She had reported a single episode of dizziness, characterized by blurred vision, headache and marbled flanks, 5 years previously. On physical examination, no skin lesion was visible. Testing for dermographism with a FricTest® was positive 2+.