… in your breath.  A high level of nitric oxide when you breathe out can be a sign that you have inflamed airways, and … shows up on the monitor screen . First, you need to breathe in deeply, with your mouth open.  Then you’ll be … until your lungs are empty. The test is very quick and easy to do.  It only takes a few seconds to breathe into the …

… X-ray if you have breathlessness , chest pain, or you are coughing up blood.  A chest X-ray can also see if you have a …

… Monitoring severe asthma symptoms Find out why it’s a good idea to monitor your symptoms when you have severe asthma, and the different ways you can do this, including …