Severity ratings for ITB-related adverse events
| Severity | |
| Mild | Awareness of signs or symptoms Observation but intervention is not indicated; signs and symptoms are transient |
| Moderate | Events introduce a low level of inconvenience and may interfere with daily activities Simple therapeutic measures are indicated |
| Severe | Events interrupt the patient’s normal daily activities Systemic drug therapy or other treatment; they usually require admission to hospital. |
ITB, intrathecal baclofen.