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| ==Overview== | | ==Overview== |
| ==Classification== | | ==Classification== |
| There are many possible types of hypogonadism and several ways to categorize them.
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| === Congenital v/s Acquired===
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| * An example of [[congenital]] hypogonadism (present at birth) is [[Turner syndrome]].
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| * An example of [[acquired]] hypogonadism (develops in childhood or adult life) is [[castration]].
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| === Hormones v/s Fertility===
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| Hypogonadism can involve just [[hormone]] production or just [[fertility]], but most commonly involves both.
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| * Examples of hypogonadism that affect hormone production more than fertility are [[hypopituitarism]] and [[Kallmann syndrome]]; in both cases fertility is reduced until hormones are replaced but can be achieved solely with hormone replacement.
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| * Examples of hypogonadism that affect fertility more than hormone production are [[Klinefelter syndrome]] and [[Kartagener syndrome]].
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| ===Affected System===
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| Hypogonadism is also categorized by endocrinologists by the level of the reproductive system which is defective.
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| *Hypogonadism resulting from defects of the [[gonads]] is traditionally referred to as '''primary hypogonadism'''. Examples include [[Klinefelter syndrome]] and [[Turner syndrome]].
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| *Hypogonadism resulting from [[hypothalamic]] or [[pituitary]] defects are termed '''secondary hypogonadism''' or '''central hypogonadism''' (referring to the [[central nervous system]]).
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| **Examples of [[hypothalamus|Hypothalamic]] defects include [[Kallmann syndrome]]
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| **Examples of [[pituitary gland|Pituitary]] defects include [[hypopituitarism]]
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| *An example of a hypogonadism resulting from hormone response is [[androgen insensitivity syndrome]]
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| ==References== | | ==References== |