History Symptoms Prevalence Epidemiology Raynauds? Treatment References

Raynauds?


A careful medical history will often reveal whether the condition is primary or secondary. Once this has been established, an examination is largely to identify or exclude possible secondary causes.

  • Digital artery pressure: pressures are measured in the arteries of the fingers before and after the hands have been cooled. A decrease of at least 15 mmHg is diagnostic (positive).
  • Doppler ultrasound: to assess blood flow.
  • Full blood count: this can reveal a normocytic anaemia suggesting the anaemia of chronic disease or renal failure.
  • Blood test for urea and electrolytes: this can reveal renal impairment.
  • Thyroid function tests: this can reveal hypothyroidism.
  • An autoantibody> screen, tests for rheumatoid factor, Erythrocyte sedimentation rate and C-reactive protein, which may reveal specific causative illnesses or a generalised inflammatory process.
  • Nail fold vasculature: this can be examined under the microscope.

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