Definitions for "Amenorrhea"
The absence of a menstrual cycle; either primary (failure to begin menstruating by age 16) or secondary (no menstrual cycle for 3 or more months in women who previously had a menstrual cycle).
The loss of a woman's menstrual period due to extreme weight loss and emaciation.
Keywords:  re'a, men
Keywords:  phenotype
Keywords:  gastrointestinal, oral
Gastrointestinal Oral