Sleep Apnea Preexisting Condition What Other Problems Could Be Mistaken For Sleep Apnea?

What other problems could be mistaken for sleep apnea? - sleep apnea preexisting condition

I have shown many symptoms of sleep apnea, but my sleep study, that there is a problem. I'm always tired, no energy or motivation. Depression and anxiety are a major problem. I often awake at night feeling that I can not catch my breath away, like my chest is heavy and not enough air / oxygen. What other conditions can cause these symptoms?