Signs and Symptoms
- Shortness of breath or hyperventilating
 - Heart palpitations or racing heart
 - Chest pain or discomfort
 - Trembling or shaking
 - Choking feeling
 - Feeling unreal or detached from surroundings
 - Choking feeling
 - Nausea or upset stomach
 - Feeling dizzy. light-headed or faint
 - Numbness or tingling sensations
 - Hot or cold flashes
 - Fear of dying, losing control or going crazy