A lump of ice introduced into the rectum is a favorite remedy for retention of urine. Immersion in a hot bath, by relieving deep congestion and allaying muscular spasm, is very useful in similar retention, especially when due to congestive or spasmodic stricture, or to either of these conditions, added to organic stricture. The application of a hot sponge or fomentation to the genitals and hypo-gastrium is the simplest way of relieving "nervous" retention.

In Orchitis, iced water made to circulate through a tube coiled round the affected testis will often relieve pain instantly, and entirely cut short the attack. It should be applied early. A similar coil applied to the penis has been introduced by Dr. Otis for the treatment of hemorrhage from the urethra after internal urethrotomy.