Croup

a term used from an early period to describe a certain train of laryngeal symptoms, was first applied in 1765 to an acute inflammatory and - non-contagious affection of the larynx, in which there is the formation of a false membrane or fibranous deposit on the mucous surface of the windpipe. Croup seems to be caused by a damp atmosphere of low temperature. It is most frequently met with between the years of two and ten, though all ages are liable to suffer from it. It is commoner in boys than girs.