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Puberty is considered delayed when the child has not begun puberty when two standard deviations or about 95% of children from similar backgrounds have. [7] [8] [9]In North American girls, puberty is considered delayed when breast development has not begun by age 13, when they have not started menstruating by age 15, [2] and when there is no increased growth rate. [8]
Constitutional delay of growth and puberty (CDGP) is a term describing a temporary delay in the skeletal growth and thus height of a child with no physical abnormalities causing the delay. [1] Short stature may be the result of a growth pattern inherited from a parent (familial) or occur for no apparent reason (idiopathic).
[9] [10] [11] Puberty that starts earlier than usual is known as precocious puberty, and puberty which starts later than usual is known as delayed puberty. Notable among the morphologic changes in size, shape, composition, and functioning of the pubertal body, is the development of secondary sex characteristics, the "filling in" of the child's ...
What causes precocious puberty? Scientists have still not pinned down a single reason for precocious puberty, and many factors can trigger it. The Endocrine Society says that genetics are the most ...
Constitutional growth delay is when the child's delayed puberty causes a delay in growth which will eventually catch up after puberty begins. [3] Measuring the bone age of the child after 3 years of age can be used to distinguish a normal from a pathological cause. [3]
Starting puberty significantly early — younger than age 8 in girls, 9 in boys — may have health effects lasting into adulthood, including higher risks of breast cancer, diabetes and heart disease.
Bone maturation is delayed with the variation of normal development termed constitutional delay of growth and puberty, but delay also accompanies growth failure due to growth hormone deficiency and hypothyroidism. [39] [40] Recent studies show that organs like the liver can also be used to estimate age and sex, because of the unique feature of ...
If the cause can be traced to the hypothalamus or pituitary, the cause is considered central. Other names for this type are complete or true precocious puberty. [6] Causes of central precocious puberty can include: hypothalamic hamartoma produces pulsatile gonadotropin-releasing hormone (GnRH) Langerhans cell histiocytosis; McCune–Albright ...