I have asthma. thought is was controlled but now collapse sometimes and kept passing out while hiking. can't breath good. taking symbicort (budesonide and formoterol) 4 puff day.

If you are passing: out and collapsing due to asthma - you need emergency medical care. Don't engage in heavy activity until your asthma is better controlled. take care.

Asthma: Your symptoms of passing out may be more than a case if uncontrolled asthma. See an allergist or possibly a cardiologist to rule out a cardiac problem

Get checked: Asthma attacks can be deadly. Please call 911 or go to the closest emergency room for assessment.