chronic hyperventilation syndrome?

[designer3177]

For several years, I have had a condition which causes me to yawn constantly or have to take very deep breaths.  I feel better after sleeping and then within an hour or two of waking up, it begins again and carries on all day.  It is very tough to deal with at work, in meetings, etc. where I cannot be yawning every few seconds.  It seems worse when eating, if I drink coffee - and better if I am very distracted with a project.  I have read the dozens of comments on this site from other readers with these same symptoms - and that was so helpful to know that someone else has this and it is just not all in my head.  I have been told it could be anxiety, but it occurs even when I am not anxious.  My 20-yr old daughter now has the symptoms as well, so I wonder if this could be hereditary?  I read an article about Chronic Hyperventilation Syndrome and it sounds very logical... does anyone know what the underlying cause is?