Early clinical manifestations were sudden onset of left flank pain, fever, hematuria and pyuria, and following admission, severe abdominal pain, nausea, vomiting, reduced
When to get medical help See a GP immediately if you suddenly develop severe abdominal pain. If this isn't possible, contact NHS 111 for advice.
Severe abdominal pain is the predominant symptom. Blood tests and imaging tests, such as computed tomography, help the doctor make the diagnosis.