Hello! A child's nighttime cough is not considered a worsening or complication of the current illness. Most often in children, this is a sign of rhinosinusitis, postnasal drips, which can bother the child for a long time. Most likely, there are no reasons for prescribing antibiotic therapy, especially since the child has no fever or worsening of the general condition. For a more correct and accurate consultation, the child should be examined by a pediatrician, and in case of a prolonged nighttime cough, also by a pediatric otolaryngologist.