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Adult ADHD significantly increases risk of Lewy body dementia

Nearly half of those with dementia with Lewy bodies were found to have had adult ADHD — three times the rate of controls and those with Alzheimer’s.

A study involving 360 patients with degenerative dementia (109 people with dementia with Lewy bodies (DLB) and 251 with Alzheimer's) and 149 matched controls, has found that 48% of those with DLB had previously suffered from adult ADHD. This compares with 15% found in both the control group and the group with Alzheimer's. DLB tends to be under-diagnosed, but is thought to account for around 10% of dementia cases in older people.

ADHD and DLB are thought to both involve the same neurotransmitter pathway problems.

Reference

Golimstok, A., Rojas, J. I., Romano, M., Zurru, M. C., Doctorovich, D., & Cristiano, E. (2011). Previous adult attention-deficit and hyperactivity disorder symptoms and risk of dementia with Lewy bodies: a case-control study. European Journal of Neurology, 18(1), 78-84. Retrieved from http://onlinelibrary.wiley.com/doi/10.1111/j.1468-1331.2010.03064.x/abstract

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