my ds is 4 1/2 hes asthmatic and is on singulair, salbutmaol and pulmicort, hes had a cough for a few days now, which sounds very phelmy, but today when he has been coughing he makes a high pitch noise when he coughs. hes not really needed his salbutmaol much more than normal and seems ""ok"" with it.
is it normal?