Abdominal distension, dysuria, and a bit of itching may be related to urinary tract infections, bladder stones, bladder tumors, and so on. Female patients may also be caused by pelvic inflammatory disease, vaginitis and so on. Male patients may also be caused by prostatitis. 1. Urinary system infection: generally patients have abdominal distension, dysuria, a little itchy symptoms, may be associated with urethritis, cystitis and other urinary system infections caused by the patient will mainly have frequent urination, urinary urgency, urinary pain and other symptoms, some patients may also have abdominal distension, pubic itchy feeling. 2. Foreign body stimulation: In addition, bladder stones, bladder tumor foreign body, etc. will also make the patient appear abdominal swelling, pain, urinary symptoms, due to the stimulation of the urethra, may also appear itching symptoms. 3. Inflammation of the reproductive system: if the female patients may also be associated with vaginitis, some patients with vaginitis may not be obvious abdominal distension, but there will be itching, dysuria, leukorrhea and other symptoms. If a male patient may also be related to prostatitis, due to the stimulation of inflammation, there will also be abdominal discomfort, urinary frequency, urinary urgency, dysuria and other symptoms. This symptom may also be caused by other factors, it is recommended that patients go to the regular hospital in a timely manner, under the guidance of the doctor to carry out the appropriate examination, to clarify the cause of the active treatment, and strive for early recovery.