Hello
Thank you for the query.
You might be suffering from recurrent vaginal yeast infections... Have your blood sugars tested.
A high vaginal swab will tell you if it is fungal, or bacterial infection.
You could be allergic to some kind of soap, cleanser, tampon or tissue.
For the time being, stop using all products on the vaginal area, and clean with lukewarm water without rubbing vigorously.
Use cotton, unscented underwear.
If sexually active, it could be condom allergy.
Deficiency of vitamin D causes recurrent vaginitis, so get yourself tested.
Take care.

Hello, thanks for using HCM.
Vulval (including vagina) itches can be due to infectious as well as allergic causes. Amongst the infectious causes, Candida infection and Trichomoniasis are the most common.
Candida infections are not thought to be sexually transmitted but are predisposed by use of hormonal contraceptives, vaginal douching, poor anal hygiene, use of antibiotics and antiseptics etc. Treatment would require a control of the risk factors as well as oral fluconazole and vulval anti fungal cream.
Trichomoniasis is sexually transmissable, implying that treatment has to be given to both partners in order to be effective. Treatment is done using oral metronidazole for both partners.
However, non infectious causes such as allergy is common and most often due to under wears and even to certain drugs. This could be treated by identifying a possible cause and stopping its use, changing under wears to cotton under wears etc.
Itching more at night could likely be scabies as well and it usually affects more than one person in the house at a time.
I will advice you see your doctor to take into consideration all the above and your treatment should be cyclical (at least three menses) if the cause is of infectious origin.
Best regards and hope this helps