Reversible cause of dementia is

Dementia Types:- The dementia can be divided in to reversible and irreversible dementias. It is extremely impoant to do detailed work up of a patient of dementia as around 15% of cases are reversible. The reversible causes of dementia are:- A. Neurosurgical conditions (subdural hematoma, normal pressure hydrocephalus, intracranial tumors, intracranial abscess). B. Infectious causes (meningitis, encephalitis, neurosyphilis, lyme disease). C. Metabolic causes (vitamin B12 or folate deficiency, niacin deficiency, hypo and hypehyroidism, hypo and hyperparathyroidism D. Others (drugs and toxins, alcohol abuse, autoimmune). Ref:- Psychiatry by Sandeep Govil; pg num:- 35