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Related Experiment Videos

Leucocytoclastic vasculitis induced by prolonged exercise

M Prins1, J C Veraart, A H Vermeulen

  • 1Department of Dermatology, Academisch Ziekenhuis, Maastricht, Netherlands.

The British Journal of Dermatology
|May 1, 1996
PubMed
Summary
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Skin issues after long-distance walking are common. This study found leucocytoclastic vasculitis in walkers, suggesting exercise-induced microcirculation changes and immune responses contribute to these symptoms.

Area of Science:

  • Dermatology
  • Exercise Physiology
  • Immunology

Background:

  • Long-distance walking can cause unexplained skin symptoms, particularly purpuric lesions on the lower legs.
  • The underlying causes of these exercise-induced dermatological manifestations remain poorly understood.

Purpose of the Study:

  • To investigate the aetiology of skin symptoms in long-distance walkers.
  • To analyze biopsy specimens from purpuric lesions that appeared during prolonged physical activity.

Main Methods:

  • Collection of 11 skin biopsies from 10 individuals who completed an 80 km walk.
  • Histopathological examination of biopsy specimens to identify cellular and vascular changes.
  • Immunofluorescence studies to detect the deposition of immune components like complement (C3c) and immunoglobulins (IgM).

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Main Results:

  • All biopsy specimens exhibited signs of leucocytoclastic vasculitis.
  • Key findings included leucocytoclasis, erythrocyte extravasation (exocytosis of erythrocytes), and perivascular infiltration by granulocytes and mononuclear cells.
  • Immunofluorescence revealed deposition of C3c in most samples and IgM in some.

Conclusions:

  • Prolonged exercise, such as long-distance walking, can trigger leucocytoclastic vasculitis.
  • Altered cutaneous microcirculation due to exercise, complement system activation, and changes in immune function are likely contributors to these skin symptoms.