How do you know if you have Mast Cell Activation Syndrome (MCAS)? There’s no single test that captures it, which is why so many people go undiagnosed. Instead, we look for patterns the body reveals over time. Common signs can include: • Reactions to foods, smells, or environments • Flushing, itching, or hives that seem random • Brain fog, fatigue, or anxiety that comes and goes • Digestive issues that don’t resolve with diet • Sensitivity to heat, chemicals, or stress Mast cells are part of your