Calculation of the Harvey Bradshaw severity index (HBSI) for Crohn’s disease
| Category | Score | |
|---|---|---|
| A | General wellbeing | 0 = Very well |
| 1 = Slightly below par | ||
| 2 = Poor | ||
| 3 = Very poor | ||
| 4 = Terrible | ||
| B | Abdominal pain | 0 = None |
| 1 = Mild | ||
| 2 = Moderate | ||
| 3 = Severe | ||
| C | Number of liquid stools per day | Number of stools |
| D | Abdominal mass | 0 = None |
| 1 = Dubious | ||
| 3 = Definite | ||
| 4 = Definite and tender | ||
| E | Complications | Score 1 for each of: |
| Arthralgia | ||
| Uveitis | ||
| Erythema nodosum | ||
| Pyoderma gangrenosum | ||
| Aphthous ulcers | ||
| Anal fissure | ||
| New fistula | ||
| Abscess |