How to know if i have hyperventilation problems?

Fast breathing +: When you breathe, you breathe in oxygen & breathe out carbon dioxide. Excessive breathing creates low levels of carbon dioxide in your blood. This causes many of the symptoms of hyperventilation. Feeling very anxious or having a panic attack are the usual reasons for hyperventiilating. However, rapid breathing may be a symptom of a disease, such as:Bleeding, Heart/ lung disorder, or infection.