chronic hyperventilation syndrome

Hyperventilation syndrome (HVS; also chronic hyperventilation syndrome or CHVS) is a respiratory disorder, psychologically or physiologically based, involving breathing too deeply or too rapidly (hyperventilation).

However, for others the condition may present in a far more insidious and subtle manner, the constant yawning or sighing, the one deep breath in three, excessive sniffing, each of these may account for the reduced levels of carbon dioxide in the lungs, which over time leads to the 'chronic hyperventilation syndrome'.