primary amenorrhea
Definition
Noun: - The absence of menstruation by age 18 in a person who has never menstruated: A medical condition describing the failure to begin menstrual periods (menarche) by the expected age, typically defined as age 18, in an individual with otherwise normal pubertal development.
Usage
This term is used in medical and clinical contexts to describe a specific type of menstrual disorder. It is a diagnostic classification.
Examples
- The patient was diagnosed with primary amenorrhea after presenting with no menstrual history at age 19.
- Primary amenorrhea can be caused by genetic conditions, anatomical abnormalities, or hormonal disorders.
- The evaluation for primary amenorrhea often includes blood tests and imaging studies.
Advanced Usage
- Differential diagnosis: The process of distinguishing primary amenorrhea from other conditions with similar presentations, such as constitutional delay of puberty.
- Etiology of primary amenorrhea: Refers to the underlying causes, which are categorized as outflow tract obstructions, ovarian failure, or disorders of the central nervous system (hypothalamic-pituitary axis).
Variants and Related Words
- Amenorrhea (n): The broader medical term for the absence of menstrual periods. Primary amenorrhea is a specific subtype.
- Secondary amenorrhea (n): The cessation of menstrual periods for at least three cycles or six months in a person who has previously menstruated.
Synonyms
- Absence of menarche: A more descriptive phrase meaning the same condition.
- Delayed menarche: This term is sometimes used, though it may imply a less definitive delay than the diagnostic term primary amenorrhea.
Related Phrases
- Workup for primary amenorrhea: The series of medical tests and examinations performed to determine the cause.
- Management of primary amenorrhea: The treatment approach, which depends on the identified cause and may involve hormone therapy, surgery, or counseling.
Noun
-
delay of menarche beyond age 18
