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    [Does benign summer light eruption exist?].
    Ann Dermatol Venereol 2002 Jun-Jul;129(6-7):855-8
    Service de Dermatologie, CHU de Caen, Cedex, France.
    Background: Contrary to other countries, in which a unique entity is recognized, two sub-groups of light eruption, benign summer light eruption and polymorphous light eruption, are identified in France. Benign summer light eruption was individualized with a few criteria: age at onset between 25-35 years old, female predominance, onset within 12 hours after an intensive exposure to sun, presence of lesions on areas which have not been regularly exposed to sunlight such as the upper chest, absence of lesions on the face, improvement during the summer period and negativity of the polychromatic phototest. In fact patients usually presenting with benign summer light eruption do not have all the criteria and they gradually develop a polymorphous light eruption. The aim of this study was to quantify, among the patients presenting with a light eruption, the population with three main criteria of benign summer light eruption.

    Patients And Method: Eighty-seven patients presenting with a light eruption, a polymorphous light eruption or a benign summer light eruption, were selected by a dermatologist. For each patient the presence or absence of the 3 main criteria were noted: a) no lesion of the face, b) improvement of the eruption during the summer period, c) negative polychromatic phototest.

    Results: Among the 87 patients, 9 of them (10 p. 100) had the three main criteria of benign summer light eruption.

    Discussion: Benign summer light eruption is either rare or defined with wrong criteria. The polychromatic phototest was gradually replaced by the UVA phototest. In fact, provocation UVA phototests do not individualize benign summer light eruption from polymorphous light eruption. Individualization of the benign summer light eruption is not justified because there is a continuous spectrum of light eruptions, ranging from the benign eruption which improves during the summer period and the chronic eruption with a high photosensitivy and lesions of the face.

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    [Polychromatic phototest sensibility is superior to UVA phototest in polymorphic light eruptions].
    Ann Dermatol Venereol 2002 Jun-Jul;129(6-7):860-4
    Service de Dermatologie, CHU, Avenue Georges Clémenceau, 14033 Caen Cedex, France.
    Background: The phototest is used to confirm the diagnosis of polymorphous light eruption and to evaluate the different treatments. The different light sources in the different countries explains the lack of standardization. In France, we use a polychromatic source emitting a radiation close to the solar spectrum. Read More
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    Photodermatol Photoimmunol Photomed 2011 Feb;27(1):35-9
    Department of Endocrinological and Medical Sciences, University of Genoa, Genoa, Italy.
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    Background: Diagnosis of polymorphic light eruption (PLE) is based on the patient's history, the morphology of the lesions and the results of phototesting. Skin lesions of PLE can be provoked by repetitive UVB or UVA irradiation. However, about 20% of the patients with PLE have negative phototests. Read More
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    Ann Dermatol Venereol 1996 ;123(12):824-6
    Service de Dermatologie Hôpital Purpan, Toulouse.
    Unlabelled: INTRODUCTION This case report of benign summer light eruption emphasizes the importance of phototests in the diagnosis of photosensitive dermatoses.

    Case Report: A 25-year-old man, phototype II, had experienced a pruriginous papulovesicular erythematous eruption of the axillary and inguinal regions each summer for 12 years. A high-dose UV phototest (40 J/cm2 x 3 days) directed on the right posterior axillary area and a whole body exposure test (4 J/cm2 UVA, 20 mJ/cm2 UVB x 3 days) were positive both clinically and histologically on day 4. Read More