I think if anyone knows the answer to this they have probably made a fortune but does anyone have any suggestions for how to reduce persistent coughing? My daughter quite often coughs but recently this has got a lot worse and at the moment she has a cold which means she is coughing constantly (every 30 seconds) all day and for most of the night. She looks shattered and it's really unbearable. I have tried honey, steam, cough mixture and lots of water but nothing really makes any difference. Also how can you tell if it's an asthma cough or just a normal cough? Any ideas would be great.