Classifies UC as mild, moderate, or severe. Acute Severe UC (ASUC) = ≥ 6 bloody stools/day + at least 1 systemic feature. Requires immediate hospitalisation and IV corticosteroids. Oxford 1955.
Bloody Stools per Day
Pulse Rate
Temperature
Haemoglobin
ESR
CRP (BSG 2019 addition)
Verified
Last Review: 2026-07-17
| Mild | < 4 stools/day; No systemic features. |
| Moderate | 4–6 stools/day; Mild systemic features. |
| Severe (ASUC) | ≥ 6 bloody stools + Systemic feature. |
Truelove SC et al. • British Medical Journal. 1955;2(4947):1041-8. The landmark trial that defined the categories and proved steroid benefit.
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Last Comprehensive Review: 2026-07-17
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