
Weight Gain
Unintentional weight gain is an increase in body weight that occurs when a person takes in more calories than the body needs or uses. More »
Missed Period
Absent menstruation means no menstrual flow, or period. Absent menstruation may be: Primary - no menstruation before age 16; Secondary - menstruation begins at the appropriate age, but later stops for more than 3 cycles or 6 months. Absent menstru... More »
Menstrual Irregularity
The menstrual cycle is not the same for every woman. On average, menstrual flow occurs every 28 days (with most women having cycles between 24 and 34 days), and lasts about 4-7 days. However, there is a wide variation in timing and duration that i... More »