A panic attack is a sudden surge of overwhelming anxiety and fear. Your heart pounds and you can’t breathe. You may even feel like you’re dying or going crazy. Left untreated, panic attacks can lead to panic disorder and other problems. The signs and symptoms of a panic attack develop abruptly and usually reach their peak within 10 minutes. Most panic attacks end within 20 to 30 minutes, and they rarely last more than an hour. A full-blown panic attack includes a combination of the following signs and symptoms: Shortness of breath or hyperventilation Heart palpitations or a racing heart…