💧🧬 Aquagenic urticaria is an extremely rare condition where #skin contact with #water triggers painful hives.

Researchers believe a substance on the skin reacts with water to release histamine. Interestingly, those affected can still drink water safely because their internal digestive systems don't trigger this specific immune response.

👉 popsci.com/health/water-allerg…

#science #biology #health #medicine #allergies #immunology #research #dermatology