A 35-year-old woman with hypertension, multiple sclerosis, diabetes, and chronic fatigue syndrome presents to the nurse practitioner with a chief complaint of "vaginal itching with white, cottage cheese-like discharge." Which answer choice is a risk factor for this chief complaint?

Choice A reason: Hypertension is not typically associated with fungal infections or vaginal candidiasis and does not increase susceptibility to this condition. Choice B reason: Multiple sclerosis itself is not a direct risk factor for vaginal yeast infections, although immune modulation from treatments could potentially increase risk. Choice C reason: Diabetes mellitus is correct. Elevated blood glucose levels can promote fungal growth and increase the risk of recurrent vulvovaginal candidiasis. Choice D reason: Chronic fatigue syndrome is not a recognized risk factor for vaginal yeast infections. While it may affect overall immunity indirectly, it does not directly predispose to this infection.