Up to 100,000 may have undiagnosed forms of dementia in England

Up to 100,000 patients with these two forms of dementia are undiagnosed, highlighting the under-diagnosis of specific types like Lewy body and frontotemporal dementia.

Dementia with Lewy bodies (including Parkinson's dementia) accounts for 10-15% of dementias, with 73,000-109,000 cases in England, but only 15,000 are diagnosed.

Frontotemporal dementia affects nearly 15,000 people in England, but barely 3,000 have a formal diagnosis, showing significant under-diagnosis in this specific type of dementia.

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