To increase carbon dioxide in the blood, try breathing through pursed lips or one nostril only. For hyperventilation caused by anxiety, relaxation techniques may help.

When to seek immediate medical care

See a doctor immediately if:

  • Hyperventilating for the first time
  • Pain, fever, or bleeding

When to make a doctor's appointment

Make an appointment to see a doctor if:

  • Worsens
  • Recurs
  • Anxious or depressed