[Thalamic dementia after a unilateral hemorrhagic lesion of the right pulvinar].

A 68 year-old man with a history of right thalamic hemorrhage demonstrated radiologically in the pulvinar and posterior portion of the dorsomedian nucleus developed a clinical picture of severe physical sequelae associated with major affective, behavioral and psychic disorders. Affective manifestations were a permanent anxiety-depression state contrasting with indifference to his surroundings. Behavioral changes included marked apathy, inertness and hypersomnia, together with occasional clastic agitated episodes and verbal and gestural stereotypies and soliloquies. Psychic sequelae were psychotic in nature: depersonalization crises, delusions of persecution, multisensorial hallucinations and absurd acts.