Prospective Multi-Centre Photopatch Test Study of Photoallergy to Sunscreens and NSAIDs in Europe

Photopatch testing remains an essential investigation for people with suspected photocontact allergies. Based on these study findings, the nature of topical photoallergens appears stable, but vigilance and ongoing review are required. To optimise the pick-up rate of photoallergy, we recommend, if practicable, a 48h occlusion period prior to irradiation.(Clinicaltrials.gov - NCT03812887).