The condition of the absence of menstruation is known as primary Amenorrhea or Anartava when a girl never gets her periods even when she reaches the age of 18 years. Such absence of the monthly cycle is known as primary Amenorrhea. There might be a number of causes of primary Amenorrhea or Anartava which can be highlighted as under:
- Polycystic ovary syndrome and ovarian failure
- Hormonal problem.
- Abnormal functioning of the endocrine system which is known to affect maturation at puberty i.e. hypothyroidism or hyperthyroidism.
- Tumor in the pituitary gland