Generally speaking, sleep disorders and disturbances are fairly common in individuals with Alzheimer's disease. Such issues may be attributed to old age, the disease itself, and/or other medical issues. For example, these "convulsion"-like movements may signal a medical issue like restless leg syndrome, which may be treatable; however, be aware that Alzheimer's disease can cause seizures, which can illicit convulsion-like movements. For these reasons, it is important that you bring this issue to the attention of your grandmother's physician for a comprehensive evaluation. Medication and non-medication treatment options may be available depending upon the cause or contributing factor to this issue.
Hi, Trinka,
Our family noticed that Mom had convulsions when she was in the hospital (although she wasn't asleep). We instantly paged the doctor. He told us that her convulsions were part of Alzheimer's disease. This may be a possibility with your grandmother, but you may want to check with her doctor just to make sure.
Take care and keep us posted!
Dorian
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