Case of Dementia with Lewy Bodies in Young Patient with Family History

Dementia with Lewy bodies (DLB) is a neurodegenerative disorder characterized by cognitive decline, fluctuating attention, visual hallucinations, and sleep disorders, sometimes with signs of parkinsonism. Pathological evaluation reveals deposition of abnormally metabolized alpha‐synuclein, termed Lewy bodies. Clinical signs of DLB may be misdiagnosed in young patients with coexisting psychiatric disorders. A 43‐year‐old left‐handed man with a history of chronic paranoid schizophrenia, controlled with haloperidol, paroxetine, quetiapine, and clonazepam, presented with a 3‐year history of declining short‐term memory and concentration. He had a twin brother who was diagnosed with DLB and passed away at 40 years of age.