A sun allergy is a condition that happens when the immune system reacts to sunlight. The immune system treats sun-altered skin as foreign cells, leading to the reactions. The reactions that can occur include a rash, blisters or hives. Only people with sensitivity to the sun will exhibit symptoms. For some, the reaction could occur after only a …
https://my.clevelandclinic.org/health/diseases/17681-sun-allergy

