Your uncle’s behavior of talking to the doorknob as if it’s an old friend is likely due to hallucinations, which are common symptoms of dementia[2][5]. Hallucinations involve experiencing sensory perceptions that aren’t real, such as seeing or hearing things that aren’t there[2].
In dementia, changes in the brain can affect how it processes information and interprets sensory signals[2]. This can lead to misinterpretations of the environment, causing a person to see or interact with objects as if they were something else entirely.
Your uncle might be experiencing visual hallucinations, which are especially common in certain types of dementia like Lewy body dementia[2][8]. He may genuinely perceive the doorknob as a familiar person or object from his past.
It’s important to understand that these hallucinations can seem very real to the person experiencing them[2]. Your uncle likely isn’t intentionally pretending or acting out – in his mind, he may truly be having a conversation with someone he knows.
This behavior can be unsettling for family members to witness, but it’s generally not harmful to the person with dementia. In fact, forcefully contradicting or arguing about the hallucination might cause distress[2]. Instead, it’s often better to respond calmly and reassuringly, perhaps gently redirecting your uncle’s attention to something else.
Remember that hallucinations in dementia can come and go, and their frequency or intensity might change over time[2][8]. If the hallucinations seem to be causing your uncle distress or interfering significantly with daily life, it’s a good idea to consult with his doctor. They might be able to suggest strategies or treatments to help manage this symptom.
Ultimately, while it may seem strange, your uncle’s behavior is a manifestation of how dementia is affecting his brain. Approaching the situation with patience, understanding, and compassion can help both him and your family navigate this challenging aspect of the disease.
