A Panic Attack is a discrete period of intense fear or discomfort that develops abruptly and unexpectedly and reaches a peak within approximately ten minutes. It could include the following symptoms: palpitations or pounding heart, sweating, trembling, shortness of breath, feeling of choking chest pain, nausea or abdominal distress, feeling of derealization or depersonalization, fear of losing control or going crazy, fear of dying, numbing or tingling, and chills or hot flashes. Sometimes they feel like heart attacks.