symptoms of a panic attack

increased awareness of heart beat
sweating
trembling or shaking
feeling of choking, shortness of breath or something
chest pain or discomfort
nausea or abdominal distress
feeling of unreality or feeling detached from oneself or from the surroundings
feeling dizzy, unsteady, light-headed or faint
fear of losing control or going crazy
fear of dying
numbness, tingling or pins and needles
chills or hot flushes