Historical cause of death 1700s-1800s
What did brain fever mean on a death certificate?
On a death record, brain fever meant a violent fever with delirium, headache, and stupor, blamed on inflammation of the brain. In modern terms it usually pointed to meningitis or encephalitis, in many cases. Novels used brain fever for any collapse after shock, and certifiers were little stricter, so hold the term loosely. Expect it on records mostly 1700s-1800s.
Also written on records as: inflammation of the brain, phrenitis, brain congestion.
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Related terms
Browse the full genealogy records glossary for more occupations, causes of death, and legal terms.
FAQs
What is brain fever called today?+
Meningitis or encephalitis, in many cases, broadly speaking. Doctors of the period diagnosed without laboratory tests, so one label often covered several conditions we would now separate. This page explains historical record language and is not medical advice.
How was brain fever written on death records?+
Clerks and doctors also wrote inflammation of the brain, phrenitis, and brain congestion. Spelling wandered from register to register, so check every variant before you decide a record is missing or wrong.
Where do these definitions come from?+
They are drawn from period dictionaries, government archive glossaries, and standard genealogy references, cross-checked against each other; provenance is documented with the dataset. Inside AncestorIQ, Deep Research reads the record itself and explains terms like this in context, against your ancestor's own document.
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