Your doctor will look for other medical illnesses before diagnosing hyperventilation syndrome.

If your doctor has explained that you hyperventilate from anxiety, stress, or panic, there are steps you can take at home. You, your friends, and family can learn techniques to stop you from hyperventilating when it happens and to prevent future attacks.

If you start hyperventilating, the goal is to raise the carbon dioxide level in your blood, which will put an end to most of your symptoms. There are several ways to do this:

1. Get reassurance from a friend or family member to help relax your breathing. Words like "you are doing fine," "you are not having a heart attack," and "you are not going to die" are very helpful. It is extremely important that the person helping you remain calm and deliver these messages with a soft, relaxed tone.
2. To increase your carbon dioxide, you need to take in less oxygen. To accomplish this, you can breathe through pursed lips (as if you are blowing out a candle) or you can cover your mouth and one nostril, and breathe through the other nostril.

Over the long term, there are several important steps to help you stop overbreathing:

1. If you have been diagnosed with anxiety or panic, see a psychologist or psychiatrist to help you understand and treat your condition.
2. Learn breathing exercises that help you relax and breathe from your diaphragm and abdomen, rather than your chest wall.
3. Practice relaxation techniques regularly, such as progressive muscle relaxation or meditation.
4. Exercise regularly.

If these methods alone are not preventing your overbreathing, your doctor may recommend a beta blocker medication.

Call your health care provider if:

• You are experiencing rapid breathing for the first time. (This is a medical emergency and you should be taken to the emergency room right away.)
• You are in pain, have a fever, or notice any bleeding.
• Your hyperventilation continues or gets worse, even with home treatment.
• You also have other symptoms.

Your doctor will perform a careful physical examination.

To get your medical history, your doctor will ask questions about your symptoms, such as:

• Do you feel short of breath?
• What other symptoms do you have when you are breathing rapidly? Do these symptoms start at any other time (for example, when you are walking or exercising)?
• Do you have any medical conditions, such as high blood pressure, diabetes, or high cholesterol?
• What medications do you take?
• What is happening in your life in general? Has it been a particularly stressful time?
• Do you feel anxious or stressed, especially before you start breathing rapidly?
• Are you in pain? What does the pain feel like? How intense is the pain? Where is it located?
• What other symptoms do you have (for example, have you had any bleeding? Are you dizzy?)

The doctor will assess how rapidly you are breathing at the time of the visit. If you are not breathing quickly, the physician may try to induce hyperventilation by instructing you to breathe a certain way.

While you hyperventilate, the doctor will ask how you feel and watch how you breathe -- including what muscles you are using in your chest wall and surrounding areas.

Tests that may be performed include:

• Blood tests for the oxygen and carbon dioxide levels in your blood
• Chest CT scan
• ECG
• Ventilation/perfusion scan of your lungs
• X-rays of the chest