Dear Welcome to HCM We understand your concerns I went through your details. Heart rate above 100 is called tachycardia. Tachycardia is a faster than normal heart rate at rest. A healthy adult heart normally beats 60 to 100 times a minute when a person is at rest. When your heart s rate is too rapid, it may not effectively pump blood to the rest of your body, depriving your organs and tissues of oxygen. This can cause these tachycardia-related signs and symptoms: Dizziness Shortness of breath Lightheadedness Rapid pulse rate Heart palpitations — a racing, uncomfortable or irregular heartbeat or a sensation of flopping in the chest Chest pain Fainting (syncope) Some people with tachycardia have no symptoms, and the condition is only discovered during a physical examination or with a heart-monitoring test called an electrocardiogram. Many things can cause or contribute to problems with the heart s electrical system. These factors include: Damage to heart tissues from heart disease Abnormal electrical pathways in the heart present at birth (congenital) Disease or congenital abnormality of the heart Anemia Exercise Sudden stress, such as fright High blood pressure Smoking Fever Drinking too much alcohol Drinking too many caffeinated beverages Medication side effects Abuse of recreational drugs, such as cocaine Imbalance of electrolytes, mineral-related substances necessary for conducting electrical impulses Overactive thyroid (hyperthyroidism) In some cases, the exact cause of tachycardia can t be determined. In your case, I suggest you to consult a physician immediately. If you require more of my help in this aspect, please use this URL. http://goo.gl/aYW2pR. Make sure that you include every minute detail possible. Hope this answers your query. Further clarifications are welcome. Good luck. Take care.