Dr Phil Kieran: Is it normal for my son to feel tired all the time?

RSV can cause either a worsening or unmasking of underlying asthma or a condition called post-viral bronchial reactivity (similar to asthma but not long-term)

RSV is at its peak in January-February and is one of the leading causes of bronchiolitis in young children, which can lead to hospitalisation. Thankfully, it is a mild, self-limiting condition for most and will settle down fully in two to three weeks.

My 10-year-old son picked up RSV in January, and it took weeks for him to recover. He is back at school but says he feels tired most of the time. Is this normal?

Fatigue is a common symptom in general practice and can have many different causes.