Mast cell activation syndrome (MCAS) is a condition that causes mast cells to release an inappropriate amount of chemicals into your body. This causes allergy symptoms and a wide range of other indications.
Symptoms
- Heart: rapid pulse (tachycardia), low blood pressure (hypotension) and passing out
- Skin: itching (pruritus), hives (urticaria), swelling (angioedema) and skin turning red
- Lung: wheezing, shortness of breath, and harsh noise when breathing (stridor) that occurs with throat swelling
- Gastrointestinal tract symptoms: diarrhea, nausea with vomiting and crampy abdominal pain
Common Triggers
- Stress
- Medications
- Insect Stings & Bites
- Alcohol
- Exercise
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