There are many reasons for patients with polyuria. If the frequency of urination increases, it may be cystitis, or other reasons that oppress the bladder, such as colon cancer, bladder cancer, these cancers, and women's enlarged uterus in pregnancy. These factors may oppress and stimulate the bladder, causing frequent urination. The common reason for the increase of urine volume is that patients have mental thirst. For example, patients with anxiety disorder will naturally increase urine volume if they keep drinking water. Patients with diabetes insipidus and diabetes may also cause excessive urine production in the kidney, which will lead to an increase in the total amount of urine in patients. Therefore, there are many reasons for urination, and we should treat it in a specific way.
