Dementia is a loss of brain function over weeks, months, or years that occurs with certain diseases. It affects memory, thinking, language, judgment, and behavior. Similar changes that occur over hours or a day or two is called delirium or encephalopathy.
Metabolism refers to all the physical and chemical processes in the body. Dementia due to metabolic causes is a loss of brain function that can occur with diabetes, thyroid disease, and other metabolic disorders.
How often this condition affects different ages, genders, and races varies based on the disorder that is causing the dementia.
Metabolic causes of dementia include:
DeKosky ST, Kaufer DI, Hamilton RL, Wolk DA, Lopez OL. The dementias. In: Bradley WG, Daroff RB, Fenichel GM, Jankovic J, eds. Neurology in Clinical Practice. 5th ed. Philadelphia, Pa: Butterworth-Heinemann; 2008:chap 70.
Brewer JB, Gabrieli JDE, Preston AR, Vaidya CJ, Rosen AC. Memory. In: Goetz CG, ed. Textbook of Clinical Neurology. 3rd ed. Philadelphia, Pa: Saunders;2007: chap 5.
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