Hi good evening doctor.i will like to ask why my...

treatment of vaginal itsching ?
 visit your gynacologist doctor to do the medical check for
 and pay attention to your personal hygine
avoid direct contact to other by sexual intercourse or touching to prevent spearding the infection ( if existed )
 use condoms and protecting tools during sex and 
 in case of bacterial infection such as Trichomoniasis , you may use Metronidazole for 2 weeks course topically or orally
 in case of bacterial infection such as chlamydia , you may use azithromycin or doxycycline for 2 weeks course topically or orally
vaginal itscing causes

1. personal hygine
2. could be bacterial infection
3.  could be STD

vaginal infection other symptoms ?

1. skin itching
2.  vaginal bad or strong smell
3.  painful urination if accompnied by UTI
4. . pain or discomfot during sexual intercourse

needed medical tests :
routine clinical check by doctor  vaginal discharge or effected area bacterial cultural  and pap and smear check and urine cultural check
and vaginal bacterial cultural
my advise
Regularly take the previous treatment