Bacterial vaginosis differential diagnosis

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sara Mehrsefat, M.D. [2]

Overview[edit | edit source]

Bacterial vaginosis must be differentiated from other diseases that cause purulent, malodorous, thin vaginal discharge with elevated vaginal pH (<4.5). Such diseases include trichomoniasis, atrophic vaginitis, and desquamative inflammatory vaginitis. Additionally, bacterial vaginosis also must be differentiated other conditions such as vaginal candidiasis, vaginitis, and cervicitis.^[1]^[2]^[3]^[4]^[5]

A diagnosis of bacterial vaginosis is unlikely in the absence of the following findings:

Bacterial vaginosis must be differentiated from:^[1]^[2]^[3]^[4]^[5]


Disease	Findings
Trichomoniasis	Presents with purulent, malodorous, thin discharge associated with burning, pruritus, and dysuria, with the sign of vaginal inflammation and elevated vaginal pH (>4.5) Motile trichomonads on wet mount Positive culture (Gold standard) Positive nucleic acid amplification test (NAAT)
Atrophic vaginitis	Progressive symptoms Presents with yellow and malodorous vaginal discharge, vaginal dryness, postcoital bleeding, and dyspareunia with the sign of vaginal inflammation and elevated vaginal pH (>5) Diagnosis is critical and laboratory tests can confirm hypoestrogenic state
Desquamative inflammatory vaginitis	Chronic clinical syndrome with unknown etiology Presents with dyspareunia, dyspareunia, yellow, grey, or green profuse vaginal discharge with the sign of vaginal inflammation and elevated vaginal pH (>4.5) Microscopy shows large number of parabasal (immature squamous epithelial cells) and inflammatory cells
Vaginal candidiasis	Presents with vulvar pruritus and cottage cheese-like vaginal discharge with no or minimal odor with normal vaginal pH (4-4.5) presence of Candida on wet mount (adding 10% KOH destroys the cellular elements and facilitates recognition of budding yeast, pseudohyphae, and hyphae)

↑ ^1.0 ^1.1 Centers for Disease Control and Prevention. 2015 Sexually Transmitted Diseases Treatment Guidelines. Bacterial Vaginosis. http://www.cdc.gov/std/tg2015/bv.htm Accessed on October 13, 2016
↑ ^2.0 ^2.1 Bachmann GA, Nevadunsky NS (2000). "Diagnosis and treatment of atrophic vaginitis". Am Fam Physician. 61 (10): 3090–6. PMID 10839558.
↑ ^3.0 ^3.1 Krieger JN, Tam MR, Stevens CE, Nielsen IO, Hale J, Kiviat NB; et al. (1988). "Diagnosis of trichomoniasis. Comparison of conventional wet-mount examination with cytologic studies, cultures, and monoclonal antibody staining of direct specimens". JAMA. 259 (8): 1223–7. PMID 2448502.
↑ ^4.0 ^4.1 Sobel JD, Reichman O, Misra D, Yoo W (2011). "Prognosis and treatment of desquamative inflammatory vaginitis". Obstet Gynecol. 117 (4): 850–5. doi:10.1097/AOG.0b013e3182117c9e. PMID 21422855.
↑ ^5.0 ^5.1 Eckert LO, Hawes SE, Stevens CE, Koutsky LA, Eschenbach DA, Holmes KK (1998). "Vulvovaginal candidiasis: clinical manifestations, risk factors, management algorithm". Obstet Gynecol. 92 (5): 757–65. PMID 9794664.