February 2018 Monthly, Weekly and Daily Validated Holidays, Calendar, and Observances.
When to see a doctor. Arrhythmias may cause you to feel premature or extra heartbeats, or you may feel that your heart is racing or beating too slowly. Other signs and symptoms may be related to your heart not pumping effectively due to the fast or slow heartbeat. These include shortness of breath, weakness, dizziness, lightheadedness, fainting or near fainting, and chest pain or discomfort.
Rapid heart rate (pulse) WebMD Symptom Checker helps you find the most common symptom combinations and medical conditions related to rapid heart rate (pulse). Click on the combination that matches your symptoms to find the conditions that may cause these problems.