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Regarding your question
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so how do we treat micropenis

hormonal replacement therapy by giving the patient testosteron (the male sex hormone) , this mainly used in childhood , but there are some studies that proved it worked with adults too
surgery by an operation called genitoplasty the doctor by this operation enlarge the penis by graft soft tissue into it and augment it
what you read about lotions or cream to enlarge the penis is not approved medically and they didnt give any results
what you read about excersices to enlarge the penis is not approved medically and they didnt give any results

what are the causes of micropenis

when the individual was in the infant stage he might be exposed to estrogen drugs that opposed the testosteron work as if his mother took those drugs
some chromosomal syndrom as klinfilter , prader willi , noonan
hypopituitarism , the pituitary gland is not workin well
anorchia which means there is no testis in the scrotuminfirtility

what are the associated symptoms with micropenis

infirtility
having female hair distribution
loose voice
tall stature
decrease in the sexual desire
erectile sysfunction

how do we diagnose the cause of micrpenis

clinical exam
measurin sex hormones in the blood
measuring gonadotropins hormones (fsh and LH) in the blood
scrotal ultrasound
chromosomal karyotyping
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