I don't know nothing about ginecology.
Did you have unprotected sex?
Since nobody else answered your question and itching could be a STD (or maybe just a fungus), you must talk to your doctor right away, okay?
i would like to ask what might be the solution to eradicate the dark part of the vagina. When i saw it, its not good to see..because i think it was blackened because of itching...is there possible solution to bring it back to its color.