The following causes are common: constipation, intestinal obstruction, urinary retention and so on.
1. Constipation: After constipation occurs, the intestinal contents will accumulate in the intestinal tract, and the patient will feel bloated in the lower abdomen.
2. Intestinal obstruction: after the occurrence of intestinal obstruction, defecation will be blocked, which will lead to abdominal distension, often accompanied by nausea and vomiting, abdominal pain and other discomforts.
3. Urinary retention: After urine is retained in the bladder, it is called urinary retention, which will lead to distension of the lower abdomen, and there will be swelling and pain.
Patients need to go to the hospital, you can improve the ultrasound and other tests, combined with physical examination, usually can clarify the cause, and then you can carry out the appropriate treatment.