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Related Experiment Videos

Plasmapheresis in solar urticaria.

V Leenutaphong1, E Hölzle, G Plewig

  • 1Department of Dermatology, Heinrich Heine University, Düsseldorf, FRG.

Dermatologica
|January 1, 1991
PubMed
Summary
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Plasmapheresis may benefit solar urticaria patients with circulating photoallergens. This treatment removed photoallergens, leading to remission in one patient and improvement in another.

Area of Science:

  • Dermatology
  • Immunology
  • Photomedicine

Background:

  • Solar urticaria is a rare photodermatosis characterized by immediate wheal-and-flare reactions upon sun exposure.
  • The underlying mechanisms, particularly the role of circulating photoallergens, are not fully understood.
  • Limited treatment options exist for severe or refractory cases.

Purpose of the Study:

  • To investigate the efficacy of plasmapheresis in treating solar urticaria.
  • To determine if the presence of a circulating photoallergen influences treatment response.

Main Methods:

  • Three patients with solar urticaria underwent plasmapheresis.
  • Intradermal injections of in vitro irradiated serum were used to detect circulating photoallergens.
  • Clinical response to plasmapheresis was assessed.

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Main Results:

  • A circulating photoallergen was identified in two of the three patients.
  • Complete remission of solar urticaria was achieved in the patient with a detectable photoallergen.
  • Transient improvement was observed in the second patient with a photoallergen.
  • No significant benefit was noted in the patient without a circulating photoallergen.

Conclusions:

  • Plasmapheresis may be a beneficial treatment for solar urticaria, particularly in patients with a demonstrable circulating photoallergen.
  • The presence of a circulating photoallergen appears to be a predictive factor for successful plasmapheresis therapy.
  • Further research is warranted to elucidate the role of photoallergens and optimize plasmapheresis protocols for solar urticaria.