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  • Deep Vein Thrombosis
  • Dehydration
  • Delirium
  • Delirium-Aneurysmal Subarachnoid Hemorrhage
  • Delirium-Lewy Body Dementia
  • Delirium-Postconcussion Syndrome
  • Delirium-Traumatic Brain Injury
  • Delusional Disorder
  • Delusional Disorder-erotomanic
  • Delusional Disorder-jealousy
  • Delusional Erotomania
  • Delusional Jealousy
  • Dementia
  • Dementia Amnestic Disorder
  • Dementia NOS
  • Dementia Vascular
  • Dementia-Alzheimers
  • Dental-Poor Fitting Dentures
  • Dental-Poor Hygiene
  • Dependent Personality
  • Depersonalization Disorder
  • Depression
  • Depression-Bereavement
  • Dermatopolymyositis
  • Diabetes Insipidus
  • Diabetes Mellitus
  • Diarrhea
  • Disease Of The Small Intestine, Unspecified
  • Disease Of Anus And Rectum, Unspecified
  • Disease Of Biliary Tract, Unspecified
  • Disease Of Intestine, Unspecified-Colon Proximal
  • Disease Of Intestine, Unspecified-Small Intestine
  • Disease Of Stomach And Duodenum, Unspecified
  • Disease Of The Proximal Colon, Unspecified
  • Disequilibrium-Benign Paroxysmal Positional Vertigo (BPPV)
  • Disequilibrium-Central Vertigo
  • Disequilibrium-Cerebellar Disease
  • Disequilibrium-Friedreich\'s Ataxia
  • Disequilibrium-Labyrinthitis Acute
  • Disequilibrium-Vertigo-Medication-induced
  • Disequilibrium-Vertigo-Peripheral
  • Disequilibrium-Vertigo-Toxin-induced
  • Disequilibrium-Vestibular Neuritis
  • Disorder Of Brain, Unspecified-Brainstem Or Pons
  • Disorder Of Brain, Unspecified-Hemisphere
  • Disorder Of The Brainstem Or Pons, Unspecified
  • Disorder Of The Cerebral Hemisphere, Unspecified
  • Disorder-Body Dysmorphic
  • Disorder-Impulse Control
  • Disorder-Intermittent Explosive
  • Disruptive Behavior Disorder
  • Disruptive-Conduct Disorder
  • Dissociative Disorder
  • Dissociative Identity Disorder
  • Dissociative-Depersonalization Disorder
  • Diuretic-induced Hypokalemia
  • Diverticulitis
  • Diverticulosis
  • Drug Induced Edema
  • Dry Mouth
  • Dyspareunia
  • Dysthymia
  • Alzheimer's Disease

    Alzheimer's disease is a progressive, degenerative disorder that is characterized by neurotransmitter and neuropathologic changes. Alzheimer's disease initially attacks cholinergic neurons of the brain resulting in loss of memory, thinking, language skills, inability to perform activities of daily living, and behavioral changes that can be devastating.

    Alzheimer's is one of the diseases that causes dementia. Below is a pie graph of the different causes of dementia. Please note that Alzheimer's disease amkes up about 60%. 


    Clinical Presentation of Alzheimer's Disease

    The clinical presentation of Alzheimer's disease varies from person to person, and although the underlying cause of Alzheimer's disease is not entirely understood, it appears that degenerative changes in the brain begin well before there is noticeable behavioral change. Early on, Alzheimer's disease causes disruption in cholinergic neuronal pathways that project from the basal forebrain into the cerebral cortex (the brain region involved in rational thought) and the hippocampus (the brain region involved in memory). These cholinergic neurons use the neurotransmitter acetylcholine, and in Alzheimer’s disease these neurons deteriorate. The severity of cholinergic deterioration correlates with the severity of Alzheimer’s disease. Normally, the amount of the neurotransmitter acetylcholine slowly declines as we age; but significant decreases, as high as 90%, are seen in people with Alzheimer’s disease.


    Alzheimer's Symptom Course

    • Progressive and degenerative
    • Develops slowly over time, and symptoms begin to appear so gradually that it is often mistaken for normal aging
    • Memory loss
    • Then aphasia, apraxia, agnosia


    Alzheimer's and Age

    Alzheimer’s disease is the leading cause of dementia in people over 65 years of age. One out of ten people over age 65 and approximately 50 of those 85 or older have Alzheimer’s disease.

    It is estimated that the number American’s with Alzheimer's disease will more than triple by the year 2050.

    The world map on the left below shows the regionional estimates of people with dementia (an age-related disease), and the world map on the right below shows the estimates of life-expectancy for the people living in different regions. Please note that the regions of the world where people live longest have the highest rates of dememtia (because dementia is a disease of old age).

    The darker the color, the higher the rate:

    If you believe you or your loved one are developing memory problems, then see your Family Practice, Internal medicine, Neurology or Geriatric specialist.

    Find out if your personal health history puts you at risk for having 'Alzheimer's Dementia' --> Click Here to Take an Online Assessment.

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