Pseudoporphyria secondary to narrowband UVB phototherapy for psoriasis.

Type:Uv phototherapy   Time:2015-01-09 9:54:53
Pseudoporphyria secondary to narrowband UVB phototherapy for psoriasis.
A 59-year-old woman undergoing narrowband UVB phototherapy for treatment of psoriasis presented suddenly with tense blisters on both hips. The blisters were asymptomatic and disappeared within 24 hours. Histopathology together with a negative porphyrin screen made the diagnosis of pseudoporphyria. Blood tests including a full blood count, urea and electrolytes, liver function tests and antinuclear autoantibodies were normal. The patient was otherwise healthy; there was no history of extensive sun exposure, sunbeds or medication with non-steroidal anti-inflammatory drugs. This presentation of pseudoporphyria secondary to narrowband UVB radiation is unusual, as UVB radiation is not known to be associated with pseudoporphyria.
Oh C1, Jones B, Solomon R, Egan CA.
Pavlotsky F1, Baum S, Barzilai A, Shpiro D, Trau H.
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