Neurocognitive Disorder/Dementia - Causes of Reversible Dementia

4 important questions on Neurocognitive Disorder/Dementia - Causes of Reversible Dementia

DRUG - Reversible Dementia

Drugs Steroids :
prolonged use of steroid may cause raise in cortisol level -> Hippocampal atrophy -> memory troubles
Anticholinergic medications: anti-depressant, anti-psychotic, bladder muscarinic. Anti Cholinergic impairs attention and alertness as it blocks acetylcholine in the brain associated with both cortex and hippocampus
Benzodiazepines Chronic use of benzo may lead to cognitive slowing

EMOTION AND METABOLIC REVERSIBLE DEMENTIA

Emotion Pseudodementia -
Occurs commonly in elderly with depression. Depression affects cognition through psychomotor retardation, anhedonia, avolition

Metabolic
Hypothyroidism – slows metabolism leading to cognitive slowness
Chronic Liver/Kidney disease causes encephalopathy – confusion and disorientation
Electrolyte imbalances Most metabolic causes present closer to delirium

E.N.T. Of reversible dementia

Ear/Eyes Vision issue may lead to illusion/Hallucination Hearing problem may misunderstood as inattention

Normal Pressure Hydrocephalus Clinical triad of ataxia, urinary incontinence, and dementia. Demetia like symptoms are normally reversible after the spinal CSF tap

Tumour/SOL Chronic subdural hematomas (SDH) – from trivial trauma in the elderly. Usual clinical features include altered sensorium, focal neurological deficits, and memory disturbances.
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I.A of reversible dementia

Infection
AIDS/HIV infection Neurosyphilis

Anemia
Vitamin B12 deficiency is a common cause of macrocytic anemia and can result in a plethora of neuropsychiatric symptom Iron deficiency has been known to cause cognitive impairment in elderly which is independent of anaemia.

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