Respiratory alkalosis is a condition marked by low levels of carbon dioxide in the blood due to breathing excessively.

See also: Alkalosis

Common causes include:

• Anxiety
• Fever
• Hyperventilation

Any lung disease that leads to shortness of breath can also result in respiratory alkalosis.

The symptoms may include:

• Dizziness
• Light-headedness
• Numbness of the hands and feet

• Arterial blood gas
• Chest x-ray
• Pulmonary function test

Treatment is aimed at the condition that causes respiratory alkalosis. Breathing into a paper bag -- or using a mask that causes you to re-breathe carbon dioxide -- sometimes helps reduce symptoms.

The prognosis is based on the condition that causes the respiratory alkalosis.

Seizures may occur if the alkalosis is extremely severe. This is very rare.

Call your health care provider if you have any symptoms of lung disease, such as chronic cough or shortness of breath.

Murray J, Nadel J. Textbook of Respiratory Medicine. 3rd ed. Philadelphia, Pa: WB Saunders; 2000:192-193.

Marx J, Hockberger RS, Walls RM, Adams JF, et al. Rosen???s Emergency Medicine: Concepts and Clinical Practice. 6th ed. St. Louis, Mo: Mosby; 2006.