Vertigo, although it arises from many causes, may be occasioned by digestive disorders, such as the production of flatulency and palpitation, or by the absorption of products of indigestion which act as irritants of the vascular system. Such products, for example, are developed in some persons by eating shellfish, strawberries, etc. (p. 383). Lack of sufficient food may cause it.

The dietetic treatment is that of dyspepsia (p. 530). Fats, sugars, and starches are forbidden, and alkaline and laxative waters, such as Vichy, Congress, or Hathorn water, are of service to open the bowels and increase the activity of the kidneys. Lithaemic cases should be kept for a week or two upon a vegetable diet (p. 512).