ARTICLES / Alzheimer's /
Alzheimer’s Disease, the Most Common... /
By Janie Rosman
— gets worse as time passes and
gradually interferes with more and more
— doesn’t result from another disease.
— occurs as the result of a physical disease or
AD is both a progressive and a cortical dementia.
One common type of progressive dementia is Lewy body
dementia (LBD), which can occur sporadically in
people who have no known family history of this,
although rare familial cases are occasionally
Symptoms of LBD overlap with AD in many ways and
can include memory impairment, poor judgment, and
confusion. People living with LBD can have visual
hallucinations, a shuffling gait and flexed posture
— symptoms of Parkinson’s disease — and severity of
symptoms can vary daily.
Other types of dementia include:
— Also called AIDS dementia complex (ADC); can
develop in persons with human immunodeficiency virus
(HIV) and acquired immune deficiency syndrome
(AIDS). While uncommon in people who have
early-stage HIV, it can increase as HIV progresses,
although not everyone with HIV/AIDS develops ADC.
Possible early-stage symptoms include difficulty
concentrating and remembering phone numbers or
appointments, slower thinking and more time needed
to finish complicated tasks, irritability, unsteady
walking, poor coordination, and depression.
— This is most common human form of a rare, fatal
brain disorder that affects people and certain
mammals. When variant CJD (“mad cow disease”) occurs
in cattle, it can be transmitted to people under
— Includes other dementias like primary progressive
aphasia, Pick's disease and progressive supranuclear
palsy. Symptoms include personality and behavioral
changes and language difficulties.
— This is a progressive brain disorder caused by a
single defective gene on chromosome 4, characterized
by abnormal involuntary movements, a severe decline
in thinking and reasoning skills, irritability,
depression and other mood changes.