<s>[INST] What circumstances can lead to urinary tract infections? [/INST] Constipation; drinking small amounts of liquid (very concentrated urine is produced); or residual urine after urination (this can be detected by performing an ultrasound after urination). After menopause, women can also develop an atrophy of the vulvar and vaginal mucosa, which usually causes the alteration of germs at that level. In general, anything that alters the intestinal or vulvovaginal flora can promote infection of the urinary system. Source: CLINIC BARCELONA . Link: https://www.clinicbarcelona.org/en/assistance/diseases/urinary-tract-infection/frequently-asked-questions. Field: Urology. Disease: Urinary Tract Infection </s>