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Time interval from first symptoms to diagnosis of inflammatory bowel disease1
| Diagnosis | Crohn’s disease (weeks) | Ulcerative colitis |
|---|---|---|
| Crohn’s disease | 47 | 4 weeks to 7 years |
| With diarrhoea | 28 | 4 weeks to 5 years |
| Without diarrhoea | 66 | 27 weeks to 7 years |
| Ulcerative colitis | 20 | 2 weeks to 3 years |
| Indeterminate colitis* | 45 | 2 weeks to 2 years |
*Colitis caused by inflammatory bowel disease in which it is not possible to distinguish between ulcerative colitis and Crohn’s disease.
