What is Hyperventilation
Hyperventilation is rapid or shallow breathing. Stress or anxiety usually causes it. You may feel short of breath and panicked; your hands and feet may feel numb. While frightening, hyperventilation is rarely a medical problem. However, in some cases, serious conditions -- such as lung disease or heart problems -- can trigger hyperventilation. If you're hyperventilating without a clear cause -- or for the first time -- get medical help right away to rule out other problems.
Symptoms of Hyperventilation are-
Anxiety,Lightheadedness, Excessive sweating, Rapid breathing, Dizziness, Numbness or tingling, Fainting, Muscle cramps or spasms (painful)
Treatment-
If you don't know why you're hyperventilating -- or it's never happened before -- get emergency help. You need to make sure that you don't have an underlying problem.
To stop hyperventilating, you need to breathe in less oxygen. Try inhaling through pursed lips or breathing while covering your mouth and one nostril.
To prevent hyperventilation related to stress:

1.Practice breathing exercises Use relaxation techniques, such as meditation

2.Exercise regularly

3.See a therapist to get help coping with stress
Self Care-
Don't treat hyperventilation on your own unless your doctor has said it's safe. Lowering the amount of oxygen you breathe in -- by inhaling through pursed lips -- can help. To avoid hyperventilation in the future, reduce stress in your life. Learn relaxation techniques and breathing exercises. Exercise can help, too.

When to See Your Doctor

Hyperventilation is usually harmless. However, if this is the first time you've hyperventilated, get medical help right away. You need to make sure that you don't have an underlying medical problem.
Diagnosed By-
Your doctor will examine you and ask questions. You may need some tests to rule out other conditions.