Increased weight Transient
	Increased sexuality Manic psychosis Seizure
Long-lasting (unresponsive to stimulation withdrawal for few hours)
	Hypophonia Hypophonia and dysarthria Eyelid opening apraxia Worsening of depression Psychic akinesia Limb dystonia Bilateral buccinator spasm
Stimulation dependent (responsive to stimulation withdrawal for few hours)
	Paresthesias Ballic-choreic dyskinesias Blepharospasm Diplopia Monolateral buccinator spasm
Events occuring during surgical procedure
	Transient intraoperative psychosis Lead migration Subarachnoid hemorrhage
Device failure
	Unexplained switching-off Sudden end of battery life