This section is from the book "The Home Hand-Book of Domestic Hygiene and Rational Medicine. Volume 2.", by J. H. Kellogg, M.D.. Also available from Amazon: The Home Hand-Book of Domestic Hygiene and Rational Medicine, Volume 2.
The proper treatment of this condition involves chiefly the removal of the exciting cause. The departure from a normal condition is so slight that where the cause is removed, the vital forces quickly acquire equilibrium, and harmony is readily established. If the irritation arises from an excess of food, it is best not only to refrain from taking food in excessive quantities but to practice abstinence, or to take food in less than the quantity required in health for a short time. The same principle applies with reference to other causes of irritation and abnormal excitement. If the patient has been subject to excessive heat, make cooling applications. If irritation of the eyes has been produced by exposure to intense light, remove the light altogether or to a great extent for a short time. So, also, if the cause is too great mental activity from exciting influences, the latter should not only be removed but the patient should be given as nearly as possible absolute mental rest till an equilibrium has been established. In all forms of irritation sleep is a sovereign remedy, as the vital action is always lower during this condition. Soothing applications, such as a tepid bath, a vapor bath of moderate temperature, gentle rubbing or massage, and in many cases the application of a mild current of electricity, are of the greatest service in the removal of irritation, whether of a general or local character.