Acute vulvovaginitis is characterized by swelling, congestion, erosion, and sometimes ulcers or patches of eczema. Patients feel burning, itching or pain in the vulva, especially during urination. In severe cases, the inguinal lymph nodes are enlarged and painful, and the body temperature may be slightly elevated with an increase in white blood cells. In diabetic vulvodynia, the vulvar skin is red, thickened, often brown and scratched. Because urine sugar is conducive to the growth and reproduction of mycobacteria, it is often complicated by Candida albicans infection. In chronic inflammation, the vulva is itchy and mossy. Common causes of acute vulvovaginal inflammation 1, vaginal secretions stimulation (including increased flow of vaginal secretions to the vulva stimulation, stimulation of menstruation or menstrual pads, underwear, etc.); 2, other irritants (urine of diabetic patients; urinary fistula patients chronically impregnated by urine; intestinal cancer patients sometimes stimulated by feces; intestinal winding worms); 3, mixed infections (common pathogenic bacteria are staphylococci streptococci and Escherichia coli), etc.