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.
(View an animation of arrhythmia). 1  A single premature beat may be felt as a palpitation or skipped beat.. 2  Premature beats that occur often or in rapid succession may cause a greater awareness of heart palpitations or a fluttering sensation in the chest or neck. When arrhythmias last long enough to affect how well the heart works, more serious symptoms may develop: Fatigue; Dizziness; Lightheadedness; Fainting or near-fainting spells