Answer
The characteristic symptom is severe, persistent abdominal pain, sometimes spreading to the back. It needs urgent medical assessment.
Sources for this answer
- Jentadueto 2.5 mg/850 mg and 2.5 mg/1,000 mg film-coated tablets — Current selected SmPCemc · Summary of Product Characteristics
- NHSNHS · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.