Fun in the sun can be had all year long -- hiking, winter skiing, swimming, or just enjoying the warmth of the sun. However, when taking certain medicines, life in the sun can sometimes be less than fun.
Some medicines contain ingredients that may cause photosensitivity -- a chemically induced change in the skin. Photosensitivity makes a person sensitive to sunlight and can cause sunburn-like symptoms, a rash or other unwanted side effects. It can be triggered by products applied to the skin or medicines taken by mouth or injected.
There are two types of photosensitivity – photoallergy and phototoxicity.
Photoallergy is an allergic reaction of the skin and may not occur until several days after sun exposure. Phototoxicity, which is more common, is an irritation of the skin and can occur within a few hours of sun exposure. Both types of photosensitivity occur after exposure to ultraviolet light – either natural sunlight or artificial light, such as a tanning booth.
