Dutch Teen Loses Native Language After Knee Surgery, Speaks Only English
A 17-year-old Dutch teenager temporarily lost the ability to speak his native Dutch after routine knee surgery, communicating exclusively in English, a condition known as Foreign Language Syndrome.
In an extremely rare case, a 17-year-old Dutch teen lost the ability to speak his native Dutch after waking from routine knee surgery, speaking only in English—the language he usually used at school.
Medical staff initially noticed the unusual behavior and assumed it might be temporary. However, the situation persisted for several hours, prompting a psychological and medical evaluation. The teen was alert and cooperative but struggled to produce words in Dutch, while continuing to speak in English with a Dutch accent.
Doctors later diagnosed the condition as Foreign Language Syndrome, a rare disorder in which patients suddenly switch to a second language instead of their native tongue. Unlike Foreign Accent Syndrome, which affects speech sound patterns without changing the language, this condition involves a full language transition.
After 18 hours, the teenager began understanding Dutch again and fully regained his language skills the following day upon meeting his friends. He was discharged three days after surgery following complete spontaneous recovery, without the need for further neurological testing.
Foreign Language Syndrome is extremely rare, with fewer than ten documented cases worldwide, mostly in adults, making this teenage case one of the few officially recorded instances globally.
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