The normal vaginal pH value for a woman of reproductive age ranges from 3.8 to 4.5, but the value may be slightly higher than 4.5 among premenarchal and postmenopausal women. A pH level within this range can help to keep bacterial and fungal infections at bay. When the vaginal pH is above 4.5, it becomes less acidic, making it easier for bacteria and yeast to thrive.
If you are experiencing burning, itching and discomfort while your vagina has a pH of 4.5-5.0, you may be experiencing a yeast infection. If your vaginal pH is 5.0 or above, you may have Bacterial Vaginosis or another infection that requires treatment from a doctor.
Symptoms and signs of vaginitis:
|Bacterial vaginosis||Anaerobic bacteria (Prevotella, Mobiluncus, Gardnerella vaginalis, Ureaplasma, Mycoplasma)||Fishy odor; malodorous; homogenous; clear, white, or gray discharge that may worsen after intercourse; pelvic discomfort may be present.||No inflammation.||Increased risk of HIV, gonorrhea, chlamydia, and herpes infections.||greater than 4.5|
|Vulvovaginal candidiasis||Candida albicans, Candida krusei, Candida glabrata||No odor; white, thick, cheesy, or curdy discharge; vulvar itching or burning.||Signs of inflammation; Vulvar erythema and edema.||vulvodynia||4.0|
|Trichomoniasis||Trichomonas vaginalis||Green or yellow, frothy discharge; foul odor; pain with sexual intercourse, vaginal soreness, dysuria.||Signs of inflammation, “strawberry cervix”; Vestibular erythema may be present.||Increased risk of HIV infection Increased risk of preterm labor. Should be screened for other sexually transmitted infections.||5.0~6.0|