A Rapid heartbeat is a very common symptom of panic attacks, but it is not the only symptom. Feeling lightheaded and anxious are also symptoms. Other common symptoms include: sweating, shaking, difficulty breathing, feeling of choking, chest pain and GI discomfort. People also often have a fear of dying, losing control or going crazy. The symptoms tend to come on rapidly and peak within 10 minutes.
One of the frustrating things about anxiety is that it can present so differently in each person; it's not cut or dry what symptoms you will or won't have. Each person's experience will panic attacks usually varies. I have worked with people who only experience one symptom of panic, while others have experienced multiple symptoms.
I hope this helps!
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