25 Signs and Symptoms of Alzheimer's Disease

How can you tell if someone has Alzheimer's disease? Here are symptoms of the memory-robbing disorder.
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Inappropriate behavior

In the mid and especially late stages of Alzheimer's, a person may begin to lose control of his or her impulses and act out in inappropriate or uncharacteristic ways.

"They may say tactless things, like 'Gosh, you got fat,' that they would have never said before," says Gwyther.

Additionally, people with AD may forget that they are married and begin to flirt and make inappropriate sexual advances, or they might start taking their clothes off at inappropriate times or in unusual settings.

Shoplifting is not uncommon among adults with AD, who don't understand or remember that they must pay for items in stores.

Next: Delusions and paranoia

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