I have asthma and I think i need oxygen therapy!

Patient: Do you think I could get oxygen therapy?

Symptoms: I have asthma. I get out of breath when walking slowly, getting dressed, going up stairs, making my bed. And going to sleep at night and laying down causes me to get very out of breath. I have a frequent cough and I get respiratory infections quite often. Do I need oxygen therapy because this is getting bad?

Doctor: