What is MCAS?Mast Cell Activation Syndrome (MCAS) is a condition where mast cells (a type of immune cell) release excessive mediators like histamine, tryptase, and prostaglandins, causing symptoms that can affect the skin, gut, heart, and nervous system. Common triggers include foods, stress, temperature changes, and environmental factors.
Where can I find MCAS support groups?MCAS communities exist on Reddit (r/MCAS), Facebook groups, and dedicated forums. Sasha profiles these communities so you can find one that matches your needs.
What treatments are discussed in MCAS communities?Treatments include H1 and H2 antihistamines, mast cell stabilizers (like cromolyn sodium), leukotriene inhibitors, and low-histamine diets. Communities also discuss trigger identification, symptom tracking, and experiences with different specialists.
How is MCAS related to other conditions?MCAS frequently co-occurs with Ehlers-Danlos syndrome and POTS (sometimes called the "triad" of connective tissue / autonomic / mast cell conditions). It is also associated with Long COVID, ME/CFS, and various autoimmune conditions.