If you’ve ever noticed your autoimmune symptoms flare up after a stressful week (or month), you’re not imagining it. The link between stress and autoimmune disease is real — and powerful. For people living with autoimmune conditions like Hashimoto’s, lupus, rheumatoid arthritis, or multiple sclerosis, stress can act as the invisible switch that flips symptoms “on.” But here’s the good news: once you understand how stress interacts with your immune system and nervous system,