Acute phototoxic reaction in a century cyclist.

Medications can cause photosensitivity. Several of these medications, specifically the nonsteroidal anti-inflammatory medications (NSAIDs), may be taken by athletes to treat joint and muscle discomfort. Many athletic events occur outdoors, which in turn exposes athletes to sunlight. Athletes taking NSAIDs and performing extensive outdoor activities may be at higher risk for phototoxic drug reactions. Clinicians may wish consider the potential for patient photosensitivity when recommending prescription and non-prescription medications to outdoor athletes.