Your grandmother’s behavior of brushing her teeth with a hairbrush is likely due to her dementia. As dementia progresses, it can cause confusion and difficulty recognizing objects or remembering their proper use[1]. This symptom is common in people with moderate to advanced Alzheimer’s disease, which is the most frequent form of dementia[3].
In the later stages of dementia, people often struggle with everyday tasks and may use objects incorrectly[4]. Your grandmother might not recognize the hairbrush as a tool for hair and instead mistake it for a toothbrush. This confusion is a result of the changes happening in her brain due to the disease.
Dementia affects areas of the brain responsible for memory, thinking, and behavior[1]. As these parts of the brain deteriorate, it becomes harder for a person to remember the correct use of everyday items or to distinguish between similar objects. Your grandmother might be trying to maintain her oral hygiene routine but is unable to identify the right tool for the job.
It’s important to approach this situation with patience and understanding. Your grandmother isn’t doing this on purpose; it’s a symptom of her condition. You can help by gently reminding her of the correct use of objects, assisting her with daily tasks, or setting out the items she needs in a clear, easy-to-understand manner.
This behavior is just one of many changes you might notice as your grandmother’s dementia progresses. Other symptoms can include memory loss, difficulty with language, and changes in mood or behavior[1][3]. While it can be distressing to witness these changes, remember that your grandmother needs your support and compassion during this time.
If you notice new or worsening symptoms, it’s a good idea to consult with her doctor. They can provide guidance on managing these behaviors and may suggest adjustments to her care plan. With the right support, people with dementia can still maintain quality of life and dignity, even as their abilities change.
