Amenorrhoea (Greek: a - no; + men - month; + rhoia - flow) is the absence of periods. This is a normal (physiological) occurrence in girls before puberty (menarche), during pregnancy and breastfeeding (lactation) and following menopause. But failure to menstruate after puberty is called Amenorrhoea. It is generally regarded as abnormal by the age of 14 years in girls without other signs of secondary sexual development, or by the age of 16 in girls with normal secondary sexual characteristics. Absence of menstruation for six consecutive months before menopause in a woman who has previously had regular periods is also termed as amenorrhoea. The first condition is called vilambit artava (delayed menstruation) and second condition is called Artavavrodh (suspension of menstruation) Following are the organs that are responsible for regular menstruation: Uterus, ovaries, fallopian tubes and vagina: It is very important to have normal physiology and anatomy of these organs. Blood: It is important to have regular blood level. Nervous system and endocrine system: Nervous system coordinates all the gynaecological organs with endocrine system with the mind of the woman. Thus, it is very important to have healthy nervous system.