Although shortness of breath is a natural response to situations such as exercise or stress, it may also be a symptom of a more serious underlying condition. These conditions are often related to the heart (e.g., mitral valve or heart muscle diseases) or the lungs (e.g., asthma).

A person whose heart or lungs are weak may become short of breath because these organs cannot meet the body’s oxygen needs. Therefore, anyone who regularly experiences shortness of breath for no apparent reason, or shortness of breath with less strenuous activity or at rest, is encouraged to see a physician to determine the cause. Also, any heart patient who experiences sudden shortness of breath for no apparent reason is urged to seek medical attention immediately.

Shortness of breath cannot be treated until the underlying condition is known. To help diagnose this condition, physicians have developed detailed question protocols designed to help them narrow the cause. Treatments vary depending on the cause.