Answer
Seek prompt help for painful or persistent mouth, skin, genital or anal ulcers; eye pain or light sensitivity; abdominal pain; vomiting blood; or blood in stools.
Sources for this answer
- NHSNHS · NHS medicine guidance
- UK GovernmentUK Government · Reputable Web
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.