Introduction: Delirium is an acute confusional state. Phenomenological characteristics of delirium is understudied. Aims & objective: To compare phenomenology of delirium in elderly patients with and without dementia. Methods: Sixty elderly patients with delirium admitted consecutively in department of geriatric mental health were recruited in the study. DSM-IV-TR diagnostic criteria was used for diagnosis of delirium. Delirium Rating Scale – Revised–98 and Amended Delirium Motor Subtype Scale were applied to study phenomenology of delirium. To assess pre-existing dementia, Informant Questionnaire on Cognitive Decline-short form was applied. Conclusions: Severity of delirium was more in patients with dementia in both cognitive and non-cognitive symptoms. No significant difference in motoric subtype of delirium was found.