I'm an otherwise healthy 42 yo male, not overweight and get plenty exercise. Over recent months I have got progressively more out of breath. Yesterday for example I collapsed with dizziness after running out of puff whilst hoovering. I can walk good distances but I know I have done it! My chest constantly aches as does my upper back / shoulders. The asthma nurse tested lung function and it has deteriorated from 600 to 450 over the last couple of years. Not really coughing except when out of breath. I can't breathe in deeply without pain and I can't breathe out fully, so I am only using the middle ""band"" of my lungs (although it is quite a big band). No blood or sputum. Have been prescribed combined steroid inhaler but it makes no difference. Still breathless, still hurts, peak flow unchanged. I'm not convinced this is asthma. Should the doctor be looking at something else?