Overall, autoimmune diseases are common, affecting more than 23.5 million Americans. They are a leading cause of death and disability. Yet some autoimmune diseases are rare, while others, such as Hashimoto's disease, affect many people.
Heart palpitations can be triggered by stress, exercise, medication or, rarely, a medical condition. Although heart palpitations can be worrisome, they're usually harmless. In rare cases, heart palpitations can be a symptom of a more serious heart condition, such as an irregular heartbeat (arrhythmia), that may require treatment. Symptoms Heart palpitations can feel like your heart is:
Your body produces a surge of hormones when you're in a stressful situation. These hormones temporarily increase your blood pressure by causing your heart to beat faster and your blood vessels to narrow. There's no proof that stress by itself causes long-term high blood pressure. It may be that other behaviors linked to stress â such as overeating, drinking alcohol and poor sleeping habits â cause high blood pressure. However, short-term stress-related spikes in your blood pressure added up over time may put you at risk of developing long-term high blood pressure.