A panic attack is a sudden episode of intense fear that triggers severe physical reactions when there is no real danger or apparent cause
. It is a type of fear response, an exaggeration of the body's normal response to danger, stress, or excitement
. Symptoms of a panic attack can include a pounding or racing heartbeat, feeling faint, dizzy or light-headed, sweating, trembling, and feeling like you're losing control or going to faint
. Panic attacks can be caused by various factors, including genetics, major stress, and certain changes in the way parts of the brain function
. They can be treated with a range of therapies, including medications, psychotherapy, and stress management and relaxation techniques
