Asked for female, 21 years old from Sonbhadra
Hi ma'am you have to get it checked by dermatologist for black line. Vaginal infections are common now a days due to less water intake, unhygienic bowel habits. Increase your water intake and liquids through out the day. Lemon water, cranberry juice, coconut water, roohafza water and soups like tomato soup, vegetable soup, dal soups etc.