Did You Know? Drug-Induced Photosensitivity
LeadingAge PA Presenting Partner HealthDimensions Group
What causes Drug-Induced Photosensitivity?
Certain medications can cause sensitivity to the sun, known as photosensitivity, through two primary biological processes called phototoxicity (a chemically-induced reaction that may depend on the dose) and photoallergy (an immune-mediated reaction that is not related to dose).
The most effective way to address this issue is adequate sunlight protection. Patients who are prescribed the medications below should be advised to limit their exposure to sunlight by wearing protective clothing and using broad-spectrum sunscreens that protect against both UVA and UVB rays when sun exposure is unavoidable.
If a photosensitivity reaction develops, it is generally recommended to discontinue the offending drug; if stopping the medication is not possible, reducing the dose may help in certain cases, particularly with phototoxic reactions. Treatment may also include the use of topical or oral corticosteroids. It can take several weeks or even months for the skin reaction to resolve.
