The first menstrual period is called what?

• A. Lateral
• B. Idiopathic
• C. Incontinence
• D. Menarche

Answer: (D)

The onset of menstruation is called menarche. This term names the first menstrual period that occurs during puberty, signaling the start of the reproductive years. Its Greek roots—“mēn” meaning month and “archē” meaning beginning—reflect the idea of the opening of the monthly cycles. While the age can vary, usually appearing in the early teenage years, menarche marks a key milestone in female development and the ability to begin regular menstrual cycles.

Lateral, idiopathic, and incontinence refer to other concepts: lateral means toward the side, idiopathic describes a condition with no identifiable cause, and incontinence is the loss of bladder or bowel control. None of these terms describe the beginning of menstruation.