Why is my uncle with dementia convinced he has to solve a crime that never happened?

Uncle Bob’s Imaginary Crime-Solving Adventure

Your uncle with dementia believes he needs to solve a crime that never happened because his brain is playing tricks on him. Dementia messes with a person’s memory and thinking, sometimes causing them to see or believe things that aren’t real.

In your uncle’s case, his mind has created a fake crime that he feels compelled to solve. This is called a delusion – a false belief that feels very real to the person experiencing it[1]. Delusions are common in people with dementia, especially as the disease progresses[3].

Your uncle’s brain is trying to make sense of a confusing world, but the wires are getting crossed. He might be combining bits of old memories, things he’s seen on TV, and his imagination to create this fictional crime scenario[1]. To him, it feels 100% real and important.

This “crime-solving mission” might be giving your uncle a sense of purpose or importance. Even though the crime isn’t real, the need to feel useful and engaged is very real for people with dementia[3].

It’s important to remember that arguing with your uncle or trying to convince him the crime isn’t real probably won’t work. His brain truly believes this is happening. Instead, try to gently redirect his attention to other activities or topics he enjoys[3]. You could even play along a bit, asking him to tell you about the “case” he’s working on, which might help him feel heard and validated.

If your uncle’s delusions are causing him distress or leading to unsafe behavior, it’s a good idea to talk to his doctor. There may be ways to help manage these symptoms and keep him more comfortable[3].

Remember, your uncle isn’t choosing to believe in this imaginary crime. His dementia-affected brain is creating this reality for him. Approaching the situation with patience, understanding, and compassion is the best way to support him through this confusing time.