11/15/2025
Chronic rashes, food reactions, brain fog, belly pain, sudden mood swings... and nothing ever shows up on the labs? It might be Mast Cell Activation Syndrome (MCAS). In kids with PANS, autism, EDS, and chronic infections, MCAS can fuel a wide range of symptoms—but it’s often missed or misunderstood.
Learn more about MCAS: https://thewhymatters.net/mast-cell-activation-syndrome