Dementia

Dementia diagnosis involves comprehensive psychiatric evaluation including detailed medical history from the patient and family members, cognitive testing assessing memory, attention, language, and executive function, physical examination, and often laboratory tests and brain imaging (CT or MRI). The evaluation identifies the type of dementia, its stage, and any treatable contributing factors. There is no single test for dementia—diagnosis is based on careful assessment of symptoms, their pattern, and ruling out other causes.

Dementia has multiple causes. Alzheimer's disease is most common (60-80% of cases), involving brain changes including amyloid plaques and tau tangles that damage neurons. Vascular dementia results from reduced blood flow due to strokes or small vessel disease. Lewy body dementia is caused by abnormal protein deposits. Frontotemporal dementia involves degeneration of the frontal and temporal lobes. Other causes include Parkinson's disease, traumatic brain injury, infections, and chronic alcohol use. Mixed dementia, combining multiple causes, is common, especially in older adults.

Treatment depends on the type and stage of dementia. Medications like cholinesterase inhibitors (donepezil, rivastigmine, galantamine) and memantine help manage cognitive symptoms. Newer disease-modifying treatments (lecanemab, donanemab) target amyloid plaques in early Alzheimer's. Treatment also addresses the depression, anxiety, sleep problems, agitation, and behavioral symptoms that commonly accompany dementia. Non-medication approaches include cognitive stimulation, structured routines, and environmental modifications. Caregiver education and support are essential components of comprehensive care.

Most progressive dementias, including Alzheimer's disease, cannot currently be cured. However, treatment can slow progression, manage symptoms, and significantly improve quality of life for both patients and families. Newer disease-modifying treatments offer hope for early-stage Alzheimer's by targeting underlying disease processes. Importantly, some causes of dementia-like symptoms are potentially reversible—including depression, thyroid disorders, vitamin B12 deficiency, normal pressure hydrocephalus, and medication effects. This is why thorough evaluation to identify treatable causes is so crucial. Even when dementia cannot be reversed, much can be done to maximize function and comfort.

Cholinesterase inhibitors (donepezil/Aricept, rivastigmine/Exelon, galantamine/Razadyne) are commonly used for mild to moderate Alzheimer's and some other dementias, working by boosting chemical messengers important for memory. Memantine (Namenda) works differently and is used for moderate to severe stages, often combined with a cholinesterase inhibitor. Newer monoclonal antibody treatments (lecanemab/Leqembi, donanemab) target amyloid plaques in early Alzheimer's. Additional medications address accompanying symptoms: antidepressants for depression, medications for anxiety or agitation, and treatments for sleep problems. Medication choices are individualized based on dementia type, stage, and specific symptoms.

Yes, psychiatric and behavioral symptoms are extremely common in dementia—affecting the majority of people at some point during the illness. Depression affects 30-50% of people with dementia and can worsen cognitive symptoms, quality of life, and caregiver burden. Anxiety is also very common, often triggered by confusion and loss of familiar abilities. Apathy (loss of motivation and initiative) affects up to 70% of those with dementia. Agitation, aggression, and psychosis (delusions, hallucinations) occur frequently, especially in later stages. These symptoms often respond to treatment, making psychiatric involvement in dementia care essential.

Seek evaluation if you or a loved one experiences progressive memory problems that affect daily life, difficulty completing familiar tasks (cooking, managing finances, taking medications), confusion about time, dates, or location, trouble following or joining conversations, getting lost in familiar places, poor judgment in decisions, personality or mood changes, withdrawal from work or social activities, or if family members express concern about cognitive changes. Don't dismiss symptoms as "normal aging"—significant changes warrant evaluation. Early diagnosis enables access to treatments, identifies treatable causes, and allows time for planning future care needs while the person can still participate in decisions. Call 430-288-5800 to schedule a consultation.