In this disease gastric irritability, shown at first by acid vomiting and later in the grave cases by the vomiting of altered blood - black vomit, is usually present. The early vomit may be bilious, or consist simply of more or less digested food. The later vomits are excessively acid. Strength must be maintained and fluids should be freely supplied to combat the tendency to suppression of urine. Haemorrhage occurs readily from all mucous surfaces, and therefore rectal alimentation cannot be relied on.
The method of administration of food is important. It must not be in a solid or too concentrated a form and should be given frequently in very small quantities and well iced. Milk well diluted, preferably with soda-water, to which is added some carbonate of soda, 2 grains to the ounce, is as suitable as any. Iced soups, coffee and stimulants in the form of a light white wine, may be given.
The intense congestion that is present in the mucous membranes during the acute stage of the disease may pass off rapidly, but it does not always do so. A strict and very spare diet therefore must be maintained for at least a week after apparent convalescence, the amount given at a time being gradually and cautiously increased.