Susceptibility to UV-A and UV-B Provocation Does Not Correlate With Disease Severity of Polymorphic Light Eruption

Skin hardening effect in patients with polymorphic light eruption: Comparison of UVB hardening in hospital with a novel home UV‐hardening device

“…In accordance with earlier reports, the recent article by Janssens et al. has shown that a broad‐band UVA radiation caused markedly higher percentage of rash provocations than did a broad‐band UVB radiation 9 . Our percentage of positively provoked patients was not much different from the just mentioned reference, however, the low number of provoked patients prevented us from drawing firm statistically supported conclusions on the equivalence of both treatments.…”

“…We attempted to provoke the PLE skin reaction in the included patients. The higher probability of provocation reaction appears to be with UVA sources 9 . Hence a facial tanner (Eurosolar 926, lamps Cleo Performance, 105W UV3) was chosen for the provocation testing.…”

“…The higher probability of provocation reaction appears to be with UVA sources. 9 Hence a facial tanner (Eurosolar 926, lamps Cleo Performance, 105W UV3) was chosen for the provocation testing. Twenty J ⁄ cm 2 of UVA radiation were applied on the inner side of the forearm.…”

Polymorphous light eruption and benign summer light eruption in Italy

“…In fact, the number of irradiations required to reproduce the original lesions was found by Palmer et al . (21) to be lower in the severest cases, whereas other authors (22, 23) do not agree. We cannot enter such controversy as we used a standardized number of irradiations for all patients, obtaining positive phototests after 4‐day irradiations as an average (24) in about 60% of the tested patients, prevalence similar to that of other authors (25–27).…”

Photodermatoses and Skin Cancer

“…In most studies more patients reacted to UVA than to UVB. In case of positive UVA or UVB test, the reaction does not necessarly correlate to PLE clinical features and not significant relationship with clinical disease severity has been showed (Janssens et al, 2007). There are no diagnostic laboratory tests available for PLE.…”