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Behavioral signs used to score μ-opioid withdrawal
| Behavioral signs |
|---|
| Body tremor: shaking or trembling |
| Twitch: sudden movement |
| Wet-dog shake: movement of head very rapidly from side to side |
| Lying down in cage |
| Scratching |
| Grimace |
| Unusual tongue movement: tongue rolled inside mouth from cheek to cheek |
| Protrusion of tongue |
| Salivation |
| Vocalization |
| Yawning |
| Eye-closing |
| Emesis |
