keep child and parents calm
keep child in his comfortable position
don't upset child or forcing him/her to put o2 mask or examine throat
give high flow o2 15ml/min via mask or NRM
dexamethasone 150microgram/kg oral , if child refuse to wallow orally , nebulized budesonide 2mg
nebulized adrenaline 400micro-gram/kg to maximum 5mg (0.4ml/kg to maximum 5ml of 1:1000 ), repeat if no response after 30min
if severe symptoms , admit the child , if become well observe for 3hr before discharge
contact consultant for the case, if no improvement or worsening of symptoms , ET and transfer to PICU