Surprised by itchy bumps or skin redness immediately after sun exposure? This is a clear sign of sun allergy – something which about 1/5 of people suffer from. Some individuals suffer from sun rash frequently and repeatedly, others only experience it a handful of times in their lives. Once you’ve gone through an allergic reaction to sun for the first time, you’ll be able to recognise the signs instantly.
What Causes Sun Allergy?
Allergic reactions to sunlight happen mainly because of excessive exposure to the ultraviolet UVA and to some extent also UVB light which penetrates the skin and damages skin cells. The skin reacts to sunlight with an immune response, usually redness and infection.
The occurrence of sun rash can be exacerbated by certain ingredients in skin care as well as certain medications that increase photosensitivity and skin sensitivity in general. These include some antibiotics, chemotherapy medication, St John’s wort, medication for high blood pressure, or hormonal contraceptives. Always check for information about photosensitivity in the instructions.