Anxiety is one of the more common causes of abnormal fast breathing. It can be treated with psychotherapy and medication to prevent a person from hyperventilating. Aspirin and other medications should be taken only as directed.
One cause of respiratory alkalosis is exposure to high altitudes, known as acute mountain sickness. The low pressure at higher altitudes causes a person to have to breathe faster to get enough oxygen. The symptoms of fast breathing can be prevented with medications taken before a climb. Climbing slowly can also prevent symptoms, as it gives the body time to adjust.
There are generally no long-term effects to respiratory alkalosis. The underlying cause of the condition may, however, have quite serious effects. For example, the underlying cause may be brain damage.
There are no risks to others, as this condition is not contagious.