Primary amenorrhea- Absence of the first period in a young woman by the age of 16
Secondary amenorrhea- occurs when the normal menstrual period stops for three months or longer
Unexplained Weight gain or weight loss
Pregnancy
Breastfeeding
Use of birth control pills
Use of certain medications including Antipsychotics, Cancer chemotherapy, Antidepressants, Blood pressure drugs, and allergy medications
Low body weight
Poor nutrition or malnutrition
Excessive exercise
Mental stress
Thyroid malfunction
Pituitary tumour
Uterine scarring
Poorly formed reproductive organs including the uterus, cervix, or vagina
High levels of testosterone
Müllerian defects
Gynaecologist and Obstetrician