My ds has seasonal asthma, gets a virus in the autumn time and it then goes to his chest which kicks it off. Happened again this year as usual and he was prescribed the brown inhaler again. Started having two puffs at night and the cough cleared up. Then it started coming back so the gp said to up the dose. This was around two weeks ago. The last few days he is coughing constantly, mainly at night, now I know nighttime cough is an asthma symptom but this is ridiculous, every few seconds he's coughing. Blue inhaler doesn't seem to help it. He's fine in himself otherwise and he had a negative pcr come back on Monday. Could the higher dose be causing irritation ???