My son's wheezing is back

From last nite till this morning, my son could not sleep due to very bad cough and wheezing. This morning, he was also vomittig several times which most probably due to phlegm. He started to be very week and had no appetite to eat. We afraid that he might need to be hospitalised again because we can hear his wheezing from a distance. But, we took him to child clinic first, to let the doctor to decide whether need to hospitalise him. In the clinic, my boy was given nebulizer, followed by medication. Doctor had also confirmed that my son is an asthmatic and need to use Seretide Evohaler regularly to prevent him from asthma attacks. Fortunately, my boy's health condition got so much better in the afternoon and his wheezing sound is also reducing. He started to be active again and his appetite is back.