Thu 21 Nov 2019, 00:26 AM | Posted by akfossil|
How it's diagnosed
A doctor must find that you have two or three cognitive areas in decline.
These areas include disorientation, disorganization, language impairment and memory loss. To make that diagnosis, a doctor or neurologist typically administers several mental-skill challenges.
In the Hopkins verbal learning test, for example, you try to memorize then recall a list of 12 words — and a few similar words may be thrown in to challenge you. Another test — also used to evaluate driving skills — has you draw lines to connect a series of numbers and letters in a complicated sequence.
There’s no definitive test; doctors mostly rely on observation and ruling out other possibilities.
For decades, diagnosing Alzheimer’s disease has been a guessing game based on looking at a person’s symptoms. A firm diagnosis was not possible until an autopsy was performed.
But that so-called guessing game, which is still used today in diagnosing the disease, is accurate between 85 and 90 percent of the time, Lyketsos says. The new PET scan can get you to 95 percent accuracy, but it’s usually recommended only as a way to identify Alzheimer’s in patients who have atypical symptoms.
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