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Neurological disorders have been linked to suicide, but the risk across a broad spectrum of neurological disorders remains to be assessed.

To examine whether people with neurological disorders die by suicide more often than other people and to assess for temporal associations.

Nationwide, retrospective cohort study on all persons 15 years or older living in Denmark, from 1980 through 2016 (N = 7 300 395).

Medical contact for head injury, stroke, epilepsy, polyneuropathy, diseases of myoneural junction, Parkinson disease, multiple sclerosis, central nervous system infections, meningitis, encephalitis, amyotrophic lateral sclerosis, Huntington disease, dementia, intellectual disability, and other brain diseases from 1977 through 2016 (n = 1 248 252).

Death by suicide during 1980-2016. Adjusted incidence rate …