Croup symptoms typically last between 2 to 5 days, often peaking around the second or third night of illness. The most intense symptoms, such as the characteristic barking cough and stridor (a harsh, high-pitched breathing sound), usually improve within this timeframe
. However, some symptoms can persist longer:
- The barking cough may last up to 1 to 2 weeks, and in some cases, a mild cough can continue for several weeks after other symptoms have resolved
- In most children, symptoms clear up within about a week, but occasionally they may last up to 2 weeks
- If stridor or noisy breathing persists beyond 4 days, it is considered unusual and should be evaluated by a doctor
In summary, while acute symptoms of croup usually resolve in about 2 to 5 days, the cough can linger for up to a month in some cases. If symptoms worsen or persist unusually long, medical advice should be sought.
