Mast cell activation syndrome (MCAS): differential diagnosis

Written and reviewed by Dr Ibrahim Imam, Consultant Neurologist. Last reviewed .

Mast cell activation syndrome (MCAS): differential diagnosis. Benign flushing, Hormone withdrawal. Fully referenced neurology checklist.

Dermatological differential diagnosis

  • Benign flushing
  • Hormone withdrawal
  • Neuroendocrine tumours e.g. carcinoid, pheochromocytoma
  • Rosacea
  • Angioedema
  • Chronic urticaria
  • Drug reactions

Neurological differential diagnosis

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References

  1. Valent P, Akin C. Doctor, I think I am suffering from MCAS: differential diagnosis and separating facts from fiction. J Allergy Clin Immunol Pract 2019; 7:1109-1114.

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