Mayo Clinic Minute: Dermatologist explains light therapy for skin - Mayo Clinic News Network

Dr. Aleksandra Brown on Instagram: "Yes, you can be allergic to the sun — and it’s more common than you might think. Imagine stepping outside to enjoy the warm weather, only to develop an itchy rash, hives, or bumps hours later. For some people, this isn’t just sensitive skin — it’s a real condition. It’s called Polymorphous Light Eruption (PMLE) — an immune system reaction to UV light. 🔹 A few hours or days after sun exposure, your immune system goes into overdrive, causing an itchy rash, hive