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Mast cell activation syndrome (MCAS), is an immunological condition in which mast cells mistakenly release too many chemical mediators, resulting in several chronic symptoms involving the skin, gastrointestinal tract, heart, respiratory, and neurologic systems. Mast cells are present throughout most of our bodies and secrete different chemicals during allergic reactions. Symptoms include episodes of abdominal pain, cramping, diarrhea, flushing, itching, wheezing, coughing, lightheadedness and potential problems with "brain fog" or other difficulties with memory. The cause of MCAS is unknown. Treatment includes several combinations of medications like anti-histamines and mast cell stabilizers.
Source: GARD Last updated on 07-05-20
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