• skipping or racing heart
• dizzy spells or faintness
• difficulty getting your breath; hyperventilation
• smothering or choking sensation
• tingling or numbness of hands, feet, or face
• nausea or upset stomach or vomiting
• sudden feelings of panic
• hot flashes or cold chills; "jelly legs" or imbalance
• shaking or trembling of hands or legs
• feelings of "unreal" or "out-of-body" episodes
• chest pain, pressure, or discomfort
• sweating episodes; diarrhea attacks
• feelings of losing control, needing to scream, "its all in my head", "I might go insane", "I might die".

(posted 2000)