21/03/2026
People with Down's syndrome have a higher risk of developing dementia.
Knowing which signs to look out for can help make sure they get the right care and assessments as early as possible.
People with Down’s syndrome may have similar dementia symptoms as people without Down's syndrome. However, there may be some differences, such as changes in the person’s behaviour and personality.
They might become less willing to co-operate (for example, with daily tasks around the home). Or they might become stubborn, irritable or withdrawn.
The most common sign of dementia in older people is memory loss. As a person with Down’s syndrome may already have difficulties with their short-term memory, this symptom of dementia can easily be missed.
People with Down’s syndrome may experience epilepsy or fits. If a person with Down’s syndrome in later life begins to have fits, or experiences them more than usual, this could be a sign of dementia.
Speak to the GP straight away if you have any concerns about the person you care for.
People with Down’s syndrome are also more likely to have sight or hearing loss, depression, and an underactive thyroid. Dementia can complicate all of these conditions.
If you have any concerns or worries, speak to your loved one’s GP or community learning disability nurse.
