I was listening to radio four recently and heard a journalist describe his surprise ( it seems a little primitive in these high tech days ) at being advised by consultant paediatricians of the value of mist therapy in childhood croup. A brief literature search found the following "there is no evidence to support the continuing use of mist therapy in inpatient environments." (Macdonald 1997). What is current practice and is it based on evidence or is it ritualistic continuance of a 19th century practice? John Platt THORAX Volume 52(9) September 1997 pp 757-759 Management of childhood croup Macdonald, William B G; Geelhoed, Gary C