Why does my stomach hurt after urinating?

It is very common to have abdominal pain after urinating. If the pain occurs occasionally, it is no big deal. Generally, drinking some hot water or brown sugar water will relieve the symptoms. But some people also experience hematuria, bladder pain, and back pain in addition to abdominal pain after urinating. This requires going to the hospital for a check-up in time. See if abdominal pain after urination is caused by stones and kidney disease.

Causes of abdominal pain and hematuria

The mechanism of stone formation has not been fully elucidated, but it is generally believed to be related to metabolic and infectious factors.

Diagnosis of abdominal pain and hematuria

The main symptoms are pain and hematuria. A very small number of patients may have no symptoms for a long time.

(1) Pain: Most patients experience low back pain or abdominal pain. Larger stones often cause dull or lackluster pain in the affected side of the waist, which often worsens after activity. Smaller stones often cause smooth muscle spasms and colic, which often occurs suddenly and is severe, like a knife cutting, radiating to the lower abdomen, vulva, and inner thighs. Sometimes patients experience pale complexion, cold sweats, nausea, and vomiting. In severe cases, they may also experience symptoms such as weak and rapid pulse and low blood pressure. The pain often occurs in paroxysms, or may suddenly stop or ease with a certain movement, leaving dull pain in the waist and abdomen.

(2) Hematuria: Since stones directly damage the mucosa of the kidneys and ureters, microscopic hematuria or macroscopic hematuria often occurs after severe pain. The severity of hematuria is related to the degree of damage.

(III) Pyuria: When kidney and ureteral stones are complicated by infection, pus cells appear in the urine, and clinical symptoms may include high fever and low back pain.

(iv) Others: Stone obstruction can cause hydronephrosis and renal insufficiency. Some patients may also experience gastrointestinal symptoms, anemia, etc.

Differential diagnosis of abdominal pain with hematuria:

1. Abdominal pain with bloody stool: Abdominal pain with bloody stool is seen in acute dysentery and acute necrotizing enteritis.

2. Abdominal pain with diarrhea: Abdominal pain with diarrhea is one of the symptoms of acute gastroenteritis.

3. Abdominal pain accompanied by nausea and vomiting: Abdominal pain accompanied by nausea and vomiting is one of the clinical manifestations of acute pancreatitis.

4. Abdominal pain with jaundice: Abdominal pain with jaundice is one of the symptoms of pancreatic head cancer. Pancreatic head cancer refers to a malignant tumor occurring in the head of the pancreas.