Wheeze and Steroids in Preschoolers: Main study

This study tests whether a steroid medicine called prednisolone helps reduce wheezing in children aged 2 to 5 years. We already know prednisolone works in older children and adults with asthma, but the evidence in young children is mixed, and this study aims to find a clear answer. You may be eligible if: - Your child is between 24 and 59 months old (2 to just under 5 years) - Your child is currently wheezing during an acute respiratory illness You may NOT be eligible if: - Your child's wheezing is very mild (PRAM score below 3) - Your child cannot be followed up within 18 to 38 hours - Your child has taken corticosteroids in the past 7 days - Your child has a chronic lung, heart, or neurological disease - Your child is allergic to prednisolone or has a contraindication to steroids - Your child's illness may be due to a swallowed foreign object - Your child is in a life-threatening state or has a history of life-threatening asthma - Your child has already participated in this study before Talk to your doctor about whether this trial might be right for you.