title: Amenorrhea.
abstract: The appearance of amenorrhea relates to a wide variety of changes within the body. Some of these changes are simple in their cause and in their management. Others are complex and obscure. A classification of amenorrhea is discussed. An approach is described whereby the patient may be investigated and the degree of complexity determined. Some proposed cases are described to illustrate these principles.
authors.forename: R L
authors.initials: RL
authors.lastname: Willows