Causes of hyperventilation

Hyperventilation, or over breathing is when you inhale much deeper and take much faster breaths than normal. This deep, quick breathing changes the gas exchange in your lungs. Usually when you breathe oxygen goes in and carbon dioxide goes out. But when you hyperventilate you breathe out more carbon dioxide than usual so that levels in your bloodstream drop. When you're over breathing, you might not be aware you're breathing fast and deep and might have other symptoms as well like lightheaded or dizzy, feeling as if you can't catch your breath, and chest pain. This usually happens when you are nervous, anxious, or stressed or having a panic attach, infection or child birth. Women hyperventilate more often than men do. Some ways to help with hyperventilation is breathing slowly in a brown paper bag, breathe through pursed lips, breathe with your belly instead of your chest and hold your breath for 10 to 15 seconds at a time. When you're over breathing, you might not be aware you're breathing fast and deep and might have other symptoms as well like lightheaded or dizzy, feeling as if you can't catch your breath, and chest pain.
What are some causes of hyperventilation?