Details

Autor(en) / Beteiligte

• Gálvez, María V.
• Aguilera, José
• Sánchez‐Roldán, Cristina
• Herrera‐Acosta, Enrique
• Herrera‐Ceballos, Enrique

Titel

Water‐Filtered Infrared Radiation Decreases the Generation of Photodermatoses Dependent on Ultraviolet and Visible Radiation

Ist Teil von

• Photochemistry and photobiology, 2019-05, Vol.95 (3), p.874-878

Ort / Verlag

United States: Blackwell Publishing Ltd

Erscheinungsjahr

2019

Quelle

MEDLINE

Beschreibungen/Notizen

• The potential role of infrared radiation in photodermatoses has received very little attention, even though the main sources of radiation used for photobiological studies (UVA, UVB and visible light) include infrared radiation. The objective of the work was to assess whether infrared radiation is involved in the development of skin lesions in patients with different types of photodermatoses. Twenty patients with different photodermatoses were exposed to UVA, UVB and visible radiation using a high‐pressure mercury UVA lamp, a fluorescent broadband UVB lamp, a tungsten bulb and a slide projector for visible radiation. Part of the radiation emitted by these lamps was water‐filtered to block infrared radiation above 1300 nm. All 20 patients developed lesions when exposed to different light sources used for phototest. When exposed to same sources without infrared radiation, 17 patients (85%) did not develop any lesions and the other three (15%) developed less severe lesions than in the area exposed to unfiltered light. Our results show that infrared radiation was necessary for the development of skin lesions in 85% of the patients with photodermatoses in our study. We believe that infrared radiation studies should be included in standard photobiology protocols. Twenty patients with different photodermatoses were exposed to UVA, UVB and visible radiation sources in which part of the radiation emitted by these lamps was water filtered to block infrared radiation above 1300 nm. Most of patients (85%) did not develop any lesions in absence of IR radiation, and the rest developed less severe photodermatoses as observed in solar urticaria (A) and lupus tumidus (B) patients. So, infrared radiation is involved in the development of skin lesions in patients with different types of photodermatoses and this spectral band must be included in standard photobiology protocols.