Post-marketing Surveillance of Donepezil Hydrochloride - Investigation of Long Term Safety and Efficacy of Aricept as Well as Its Proper Use Information in Patients With Dementia With Lewy Bodies (DLB).

Post-marketing Surveillance of Donepezil Hydrochloride - Investigation of Long Term Safety and Efficacy of Aricept as Well as Its Proper Use Information in Patients With Dementia With Lewy Bodies.

To investigate long term safety (especially about Parkinsonism) and efficacy of donepezil hydrochloride in clinical practice as well as its proper use information in participants with DLB.

Inclusion Criteria:

1. Naive participants diagnosed as DLB

Exclusion Criteria:

1. Participants with a history of donepezil hydrochloride product administration in the past
2. Participants who have already been registered in this surveillance
3. Participants with a history of hypersensitivity to any ingredients of donepezil hydrochloride or piperidine derivatives