Characterstic features of opioid withdrawal is:
Opiod withdrawal symptoms are lacrimation,sweating, yawning, anxiety, apprehension, restlessness, rhinorrhoea and tremors seen 8-12 hours after the last dose. Ref KD Tripathi 8th ed.
Rhinorrhea and lacrimation
Seizures
Delirium Tremors
Transient visual, tactile or auditory hallucinations
Central Nervous system