The Diagnosis of Photosensitivity

Roelandts, Rik

doi:10.1001/archderm.136.9.1152

Cited by 69 publications

(58 citation statements)

References 25 publications

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“…Therapy sequelae, such as blistering, purpura, or crusting, and potential side effects, such as erythema, hypopigmentation, hyperpigmentation, atrophia, scarring, hypertrophic scarring, or keloid formation, as well as the risk of infection have to be mentioned. Pregnancy, breast feeding, the intake of retinoids or photosensitizing medications, diseases or genetic conditions causing photosensitivity or tending to aggravate after light exposure [7], as well as suntan are exclusion criteria for IPL treatment. Patients suffering from long-term diabetes, hemophilia, or other coagulopathies and patients with implants in the treatment area or with a heart pacemaker should be treated with special care.…”

Section: Practical Aspectsmentioning

confidence: 99%

Intense pulsed light (IPL): A review

et al. 2010

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Background: Intense pulsed light (IPL) devices use flashlamps and bandpass filters to emit polychromatic incoherent high-intensity pulsed light of determined wavelength spectrum, fluence, and pulse duration. Similar to lasers, the basic principle of IPL devices is a more or less selective thermal damage of the target. The combination of prescribed wavelengths, fluences, pulse durations, and pulse intervals facilitates the treatment of a wide spectrum of skin conditions. Objective: To summarize the physics of IPL, to provide guidance for the practical use of IPL devices, and to discuss the current literature on IPL in the treatment of unwanted hair growth, vascular lesions, pigmented lesions, acne vulgaris, and photodamaged skin and as a light source for PDT and skin rejuvenation. Methods: A systematic search of several electronic databases, including Medline and PubMed and the authors experience on intense pulsed light. Results: Numerous trials show the effectiveness and compatibility of IPL devices. Conclusion: Most comparative trials attest IPLs similar effectiveness to lasers (level of evidence: 2b to 4, depending on the indication). However, large controlled and blinded comparative trials with an extended follow-up period are necessary. Lasers Surg. Med. 42:93-104, 2010.

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Section: Practical Aspectsmentioning

confidence: 99%

Intense pulsed light (IPL): A review

et al. 2010

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“…This is especially true for disorders like chronic actinic dermatitis and solar urticaria. For example, the minimal urticaria dose of solar urticaria ranges in some patients from 0.1 to 1 J/cm² UVA1 [24,25]. Moreover the above-mentioned photodermatoses can also be triggered by visible light.…”

Section: Discussionmentioning

confidence: 99%

UVA and UVB Transmission of Fabrics: Critical Wavelength Based on Absorbance and Effective Dose

Gambichler

Laperre²,

Altmeyer

et al. 2002

Exog Dermatol

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Background: The degree to which a fabric protects the skin from ultraviolet (UV) rays is given as its UV protection factor (UPF) that is predominantly influenced by UVB transmission through the fabric. However, the UVA-blocking properties of a fabric are of significance as UVA plays also a role in photocarcinogenesis, photo-aging and provocation of photosensitive disorders. Objectives: The objective of this study was to present some overall performance of the protection against UVA radiation compared to the protection against UVB radiation of apparel fabrics. For this purpose, we aimed to study the ratio of the average UVA and UVB transmission and to calculate the critical wavelength (CW) of a large collection of fabric materials. Methods: We studied 196 different fabric materials. The fabrics were spectrophotometrically assessed in accordance with the European standard (part 1). We determined the mean UVB (290–320 nm) and UVA (320–400 nm) transmission, mean UVB/UVA ratios, maximum UVA transmission and CW based on absorbance and effective dose (ED). Results: We observed that about 90% of the fabrics had UVB/UVA ratios smaller than 1. This indicates that the average UVA transmission was higher than the average UVB transmission. For 20% of the fabrics, the average UVA transmission was at least twice as high as the average UVB transmission. When calculating the CW based on the absorbance for the sample set, we found that the CW of fabric materials is generally higher than 370 nm and is usually close to 380 nm. When the ED was used, a much smaller CW was found compared to the calculations based on absorbance. Conclusions: UVA transmission through fabrics is usually higher than UVB transmission. Despite a high UPF, increased UVA transmission through clothing may be of significance in triggering photosensitive disorders. The UVB/UVA ratio of fabric materials strongly correlates with the CW based on ED. Because frequently a UG-11 fluorescence filter has to be used in UPF assessment, the CW based on the ED is more relevant and less prone to measurement error.

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“…6 In the patients described, there was no history of photosensitivity suggestive of classic polymorphous light eruption, nor did any of the patients use medication. The absence of an urticarial aspect and the duration of the complaints make solar urticaria unlikely.…”

Section: Research Lettersmentioning

confidence: 91%