Burning, itching or pain in the vulva during urination is commonly associated with acute vulvodynia. If itching, burning sensation and pain in the vulvar skin are found, which is aggravated after active intercourse and urination, redness, congestion and scratching in the acute phase, vulvodynia can be initially suspected. Acute vulvovaginitis occurs mostly in women of childbearing age and rarely in infants and children and after menopause. Common causes of acute vulvovaginal inflammation include: stimulation by vaginal secretions (including increased flow of vaginal secretions to the vulva, stimulation by menstruation or menstrual pads, underwear, etc.); other irritants (urine from diabetic patients; long-term urine impregnation from patients with urinary fistula; stimulation by feces sometimes in patients with intestinal cancer; intestinal winding worms); mixed infections (common pathogens are staphylococcal streptococci and E. coli), etc. Acute vulvovaginitis is seen as swelling, congestion, erosion of the vulva, sometimes forming 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 swollen 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.