I have difficulty breathing comes suddenly last for 1-2 hours, sometimes disappear for a period and come back make me sigh a loty my ecg excellent.

Normal heart. Without examining you, it's impossible to say what is going on in your case. However, a normal ecg does make it more likely that the symptoms are caused by anxiety or stress. However, blood clots to the lung are also able to cause such symptoms. If you smoke, take birth control pills, or have had long periods of immobility (or airplane travel), see your doctor.

Related Questions

I have difficulty breathing comes suddenly last for 1-2 hours, and sometimes disappear for a period and come back and make me sigh a lot my ECG normal?

Need more info. When the difficulty with breathing occurs are you at rest or are you active? Does it occur when you are lying down or sitting or standing? Does it occur when you are upset? Are you depressed? Do you have palpitqtions or chest pain swith the difficulty breathing? What is your age. Have you had heart ot lung problems? Do you smoke? Read more...