Hello thanks for asking from HCM for your health related queries I can understand your concern. Sudden onset racing heart, tiredness, pounding heart etc occurs usually in anxiety. Your symptoms are aggravating in conditions like argument with someone and this further confirms the diagnosis of anxiety. If these symptoms are causing significant distress to your functioning then consult a psychiatrist for help. For anxiety and panic attacks like symptoms behaviour therapy and relaxation exercises have excellent roles. Progressive muscle relaxation exercise, yoga, meditation, breathing exercises can help to reduce your symptoms. If your symptoms persist even after that then medicines like SSRIs can help. Low dose benzodiazepines as Clonazepam, Lorazepam etc can help to reduce the symptoms in acute conditions. Visit a psychiatrist for help. Thanks, Hope this helps you. Take care Dr. Seikhoo Bishnoi Psychiatrist.