Stress can be a cause of heart palpitations, along with smoking, caffeine and strenuous exercise, states Healthline. Heart palpitations may or may not indicate an abnormal heart rhythm.
There are many reasons that a person may experience heart palpitations, according to Healthline. Some common causes of heart palpitations include low blood sugar, dehydration and many over-the-counter medications such as cough, cold or herbal supplements. The cause of heart palpitations is often difficult to diagnose. An individual who experiences heart palpitations along with dizziness, difficulty breathing, pain or pressure in the chest, or a resting pulse rate that exceeds 100 beats per minute should seek medical attention right away.