Primary indication should be dermatitis predominantly affecting exposed sites with or without a history of a sunscreen reaction and that PPT should also be considered in patients with chronic actinic dermatitis and any individual with a photosensitive eruption for which there is no obvious diagnosis. PPT should not be undertaken when the skin test area is active. The newly introduced European Photopatch Baseline Series EP-1000 is the series of choice supplemented by the additions in the European Photopatch Extended Series EPE-1000 as proposed by the Photopatch test taskforce group.2