The four types of dementia most people don’t know exist

Key Points:

• Dementia is an umbrella term encompassing over 100 types, with Alzheimer's disease being the most common, accounting for about 60% of cases, while rarer types make up approximately 40% and often pose diagnostic and care challenges.
• Posterior cortical atrophy (PCA) primarily affects visual and spatial abilities rather than memory early on, causing symptoms like visual hallucinations and difficulty judging depth, and may be an atypical form of Alzheimer's disease.
• Creutzfeld-Jakob disease is an extremely rare, rapidly progressing prion disease causing severe dementia and movement issues, linked to genetic factors, old age, and in rare cases, contamination from infected beef.
• FTD-MND is a form of frontotemporal dementia combined with motor neurone disease, characterized by muscle wasting, stiffness, and swallowing difficulties, often associated with a genetic mutation and distinct from typical memory-related dementia symptoms.
• Progressive supranuclear palsy (PSP) affects movement and vision due to brainstem and basal ganglia damage, leading to falls, concentration problems, and is challenging to diagnose due to symptom overlap with conditions like Parkinson's disease.
• There is no cure for dementia subtypes except some symptom-delaying medications for Alzheimer's; early recognition of diverse symptoms beyond memory loss is crucial for providing appropriate care and support tailored to each subtype.