[Self-limiting loss of consciousness in Parkinson's disease]

Patients with advanced Parkinson's disease may experience episodes of decreased consciousness, which can be as severe as a coma lasting several hours. Because no clear guidelines exist for managing self-limiting decreased consciousness in Parkinson's disease, these episodes may lead to unnecessary invasive investigations and anxiety. If a person with Parkinson's disease experiences a first episode of decreased consciousness, it is crucial to rule out both treatable and serious non-treatable causes. Furthermore, the potential for recurrence and appropriate management strategies should be discussed. We propose that if such episodes become recurrent, a more conservative treatment approach is justified.