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GlossaryMenarche

first menstrual period in a girl's life

Menarche is the term used to describe a girl's first menstrual period, marking the onset of reproductive capability. It typically occurs between the ages of 9 and 15 and is influenced by various factors including genetics, nutrition, and overall health. This event signifies a key milestone in puberty and is an important indicator of normal development in adolescent females.

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research Polycystic Ovary Syndrome (PCOS) Presenting with Delayed Menarche and Clitoromegaly

February 2022 in “Obstetrics and gynaecology cases - reviews”

PCOS can cause unusual symptoms like late puberty and enlarged clitoris, making diagnosis difficult.

research Serum Steroids And Pituitary Hormones In Female Puberty: A Partly Longitudinal Study

186 citations , February 1980 in “Clinical Endocrinology”

During puberty, hormone levels rise, with early increases in some steroids and most menstrual cycles becoming regular by six years after menarche.

research The Biochemical and Phenotypic Characterization of Females Homozygous for 5 Alpha-Reductase-2 Deficiency

54 citations , November 1995 in “The Journal of Clinical Endocrinology & Metabolism”

Females with 5 alpha-reductase-2 deficiency have less body hair, no acne, normal fertility, and delayed menarche.

research Early Lead Exposure and Pubertal Development in a Mexico City Population

29 citations , February 2019 in “Environment international”

Higher early lead exposure is linked to delayed puberty in girls.

research Is Increased Constitutive Skin and Hair Pigmentation an Early Sign of Puberty?

11 citations , April 2013 in “Homo”

Darker skin in 10-year-old girls may be an early sign of puberty.

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