Early last year i was diagnosed with anxietyafter some breathing difficulties, i was put on propranolol and although the breathing thing remained i was fine. Then about 6 months ago i started getting dizzy for no reason although not badly and it was like i was on a rocking boat not the spinning kind, doctors said stress. Then after drinking heavy one night i thought i just had a hangover but i was really un well i couldn breathe properly, i was dizzy, my muscles all felt weak and as i was trying to sleep i kept getting strange rushing sensations throughout my body which would immediatly wake me or the worst thing is i felt like i was going to stop breathing and lose control of my muscles like things were shutting down, this took weeks to go away and doctors could not find a cause, gradually i have gotten better though until now....I have recently became sick with just a simple cough and cold and after 2 days alot of the symptroms returned, not the dizziness but the muscle weakness and the feeling of my lungs shutting down when i tried to fall asleep...i feel very weak and like i might just pass out although as i said not dizzy this time, i have been tested for just about everything, diabetes, kidneys liver thyroid etc etc and they never found anything just said stress but i am not stressed and have been very hppy and calm ...There seems to be a pattern of this happening i see when im am sick or have a minor ailment of a hangover or something as such... I just want to know what is happening to me and relieve these symtoms as it is not nice at all feeling like your actually going to die...Can somebody please help or tell me they have suffered the same and gotten a diagnoses.