title: Solar urticaria in an infant.
abstract: A 2-year-old girl presented with a history of an erythematous rash which occurred immediately after exposure to sunlight and had been a problem since birth. Extensive laboratory investigations to exclude genophotodermatoses, photosensitivity secondary to metabolic disorders and photoaggravated dermatoses were negative. Monochromator irradiation phototesting demonstrated immediate erythematous flares to all ultraviolet B (UVB), UVA and visible wavelengths up to 500 nm. A diagnosis of solar urticaria was made and she responded to loratidine 10 mg daily. We believe this is the first report of solar urticaria, confirmed by phototesting with a monochromator so early in life.
authors.affiliation: Department of Dermatology, Stoke Mandeville Hospital NHS Trust, Aylesbury, Bucks.
authors.forename: A
authors.initials: A
authors.lastname: Harris
authors.forename: S M
authors.initials: SM
authors.lastname: Burge
authors.forename: S A
authors.initials: SA
authors.lastname: George
mesh_terms: D002675:Child, Preschool; D005260:Female; D006801:Humans; D010787:Photosensitivity Disorders / Q000175:diagnosis* / Q000209:etiology; D013472:Sunlight / Q000009:adverse effects*; D014581:Urticaria / Q000175:diagnosis* / Q000209:etiology