Amenorrhea (synonyms: Amenorrhea; Amenorrhea; Bleeding abnormality – amenorrhea (> 90 days); Menstruation – absent (> 90 days); Cycle disorder – amenorrhea (> 90 days); ICD-10-GM N91.2: Amenorrhea, unspecified) is a rhythm disorder.
The following forms of amenorrhea are distinguished:
- Primary amenorrhea: absence of menarche (first menstrual period):
- Until after the age of 14 (in the absence of pubertal development) or.
- Until after the age of 16 (when pubertal development has already begun).
- Secondary amenorrhea: no menstrual bleeding for > 90 days with already established cycle.
Pregnancy and lactation amenorrhea (stillamenorrhea) are considered physiological conditions.
The bleeding abnormalities (bleeding or cycle) are distinguished by rhythm disorders and type disorders.
Other rhythm disorders include:
- Polymenorrhea – the interval between bleeding is < 25 days, i.e., bleeding occurs too often
- Oligomenorrhea – the interval between bleeding is > 35 days and ≤ 90 days, i.e. bleeding occurs too infrequently
The prevalence (disease frequency) is 1.5-3% of women, throughout the reproductive years (period during which a woman is capable of reproduction).
Course and prognosis: Primary amenorrhea requires careful clarification, as it may be due to genetic causes or peculiarities of organic development (e.g. uterine aplasia/absence of the uterus).The therapy of amenorrhea depends on the underlying cause. If psychological problems are the trigger for the dysrhythmia, therapy is usually more time-consuming.
