Anxiety and panic are caused by a physical or mental condition or the effects of medications or drugs, according to WebMD. Phobic, stress and panic disorders as well as generalized anxiety disorders can cause anxiety and panic.
External factors such as stress at home, school or work can produce feelings of panic and anxiety for many individuals, explains WebMD. Financial stress and emotional trauma from the death of family members or friends can also cause anxiety and panic. Some medications produce anxiety and panic as side effects. The use of illicit drugs can also cause symptoms of anxiety and panic disorders. Individuals with a medical illness such as heat stroke, hypoglycemia or a heart attack commonly experience panic and anxiety, too.
Individuals who experience a lack of oxygen as a result of a high-altitude sickness, blood clot in the vessels of the lung or emphysema are prone to symptoms of anxiety and panic, according to WebMD. Caffeine can also cause people to feel more panic and anxiety.
Common symptoms of panic and anxiety include heart palpitations, dizziness and shortness of breath, explains WebMD. People experiencing a panic attack often feel faint or weak, a sense of terror, chest pains, and tingling or numbness in the fingers and hands.