Precocious puberty
Definition : Puberty at
an age earlier than 8 years in females and 9 years in males .
There are 2 types of
precocious puberty , true precocious puberty and pseudo precocious puberty .
True precocious puberty
:
True means that the cause is :
- Related to the gonadotrophin releasing hormone secreted from the hypothalamus
And
- Involves both secondary sexual character development and increase in the
size and the activity of the gonads
What are the causes of precocious puberty in males
and females ?
1-Idipathic ( no definite cause
) : especially for girls is the commonest cause . 2-
Secondary ( girls and boys )
as organic brain lesions e.g. brain tumor and hydrocephalus or trauma and
radiotheraby .
In this cases the hypothalamus is secreted in a
large amount leading to true precocious puberty as stated above .
But
what is the pseudo precocious puberty ?
The
condition here is different , there is no increased secretion in the
hypothalamus and it involves the secondary sexual characters only and not the
size and activity in the gonads .
What
are the causes of precocious puberty ?
The
cause here is feminization in girls or virilization in males . This may be due
to abnormal secretion in the adrenal gland or increased estrogen in females .
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