Dementia

Dementia is a major neurocognitive disorder characterized by a progressive decline in cognitive functions that interferes with a person’s ability to perform daily activities independently. In psychiatry, dementia is considered a disorder affecting multiple domains of mental functioning, including memory, language, thinking, judgment, and behavior. It is not a single disease but a syndrome caused by several underlying brain disorders. The most common cause of dementia is Alzheimer’s disease, followed by Vascular dementia, Lewy body dementia, and Frontotemporal dementia. neurotransmission. In Alzheimer’s disease, the accumulation of beta-amyloid plaques and tau protein tangles leads to progressive neuronal degeneration, particularly in areas responsible for memory such as the hippocampus. In Vascular dementia, reduced cerebral blood flow due to strokes or chronic vascular disease causes damage to brain tissue and cognitive decline. dementia involves a comprehensive clinical evaluation, including history taking, mental status examination, and cognitive assessment. Screening tools such as the Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment (MoCA) are widely used to assess cognitive impairment. Neuroimaging studies such as CT or MRI scans help identify structural brain changes, including cortical atrophy or vascular lesions. Laboratory investigations are also necessary to rule out reversible causes of cognitive decline such as vitamin B12 deficiency, thyroid disorders, or metabolic abnormalities Management of dementia in psychiatry focuses on slowing disease progression, controlling behavioral symptoms, and improving the quality of life for patients and caregivers. Pharmacological treatment includes cholinesterase inhibitors such as Donepezil, Rivastigmine, and Galantamine, which enhance cholinergic activity in the brain. The NMDA receptor antagonist Memantine is used in moderate to severe dementia. Non-pharmacological interventions such as cognitive stimulation therapy, behavioral therapy, structured routines, and caregiver education are equally important components of treatment