EndSickness.org on Instagram: "MCAS symptoms are not random. They are often memories the body never resolved. For many people with mast cell activation, symptoms flare after emotional triggers—not because it’s “in your head,” but because the nervous system learned to associate certain experiences with danger. When a current situation mirrors a past unresolved trauma (rejection, abandonment, loss of control, chronic stress), the body reacts as if the threat is happening again. Mast cells respond