Information AboutMasculinization |
| CATEGORIES ABOUT VIRILIZATION | |
| metabolism | |
| biology of gender | |
| physiology | |
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PRENATAL VIRILIZATION In the prenatal period, virilization refers to closure of the Perineum , thinning and rugation of the Scrotum , growth of the Phallus , and closure of the Urethral Groove to the tip of the Penis . In this context ''masculinization'' is synonymous with virilization. Prenatal virilization of genetic females and undervirilization of genetic males are common causes of Ambiguous Genitalia and Intersex conditions. ''Undervirilization'' can occur if a genetic male cannot produce enough androgen or the body tissues cannot respond to it. Extreme undervirilization occurs when no significant androgen can be produced or the body is completely insensitive to it, and results in a female body. Partial undervirilization produces ambiguous genitalia part way between male and female. The mildest degree of undervirilization may be a slightly small penis with Hypospadias . Examples of undervirilization are Androgen Insensitivity Syndrome , 5 Alpha Reductase Deficiency , and some forms of Congenital Adrenal Hyperplasia . Prenatal virilization (or masculinization) of a genetically female fetus can occur when an excessive amount of androgen is produced by the fetal Adrenal Gland s or is present in maternal blood. In the severest form of Congenital Adrenal Hyperplasia complete masculinization of a genetically female fetus results in an apparently normal baby boy with no palpable Testes . More often, the virilization is partial and the genitalia are ambiguous. NORMAL VIRILIZATION In common as well as medical usage, virilization often refers to the process of normal male Puberty , in which Testosterone changes a boy's body into a man's. These effects include growth of the penis and Testes , accelerated growth, development of Pubic Hair and other androgenic hair of face, torso, and limbs, deepening of the voice, increased musculature, thickening of the jaw, prominence of the neck cartilage, and broadening of the shoulders. ABNORMAL CHILDHOOD VIRILIZATION Virilization can occur in childhood in either boys or girls due to excessive amounts of androgens. Typical effects of virilization in children are Pubic Hair , accelerated growth and bone maturation, increased muscle strength, Acne , adult body odor, and sometimes growth of the penis. In a boy, virilization may signal Precocious Puberty , while Congenital Adrenal Hyperplasia and androgen producing tumors (usually) of the Gonad s or adrenals are occasional causes in both sexes. ABNORMAL VIRILIZATION IN ADOLESCENT OR ADULT WOMEN Virilization in a woman can manifest as Clitoral enlargement, increased muscle strength, acne, Hirsutism , frontal hair thinning, deepening of the voice, and Menstrual disruption due to Anovulation . Some of the possible causes of virilization in women are:
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