I'm Aoi Hashima , an occupational therapist working in Saga Sumai and Fukuoka.
I often blog about the services available after a stroke.
If higher brain dysfunction remains a post-stroke sequelae, there are several services available.
We sometimes receive inquiries about services available when high brain dysfunction is still a sequel to a traffic accident or encephalitis rather than a stroke.
There are some differences in the services available for stroke patients and for those with the sequelae of brain dysfunction after a traffic accident or encephalitis.
This time, I want to write about diseases and welfare services that lead to higher brain dysfunction by age.
Different services for high brain dysfunction after stroke and traffic accident
Source: About the Nursing Care Insurance System
Stroke is a specific disease under the long-term care insurance system.
No. 13 in the above table is listed as "cerebrovascular disease", but corresponds to stroke.
Long-term care insurance is generally available to people aged 65 and older, but long-term care insurance is available from age 40 in the case of cerebrovascular disease covered by the long-term care insurance system.
Cerebrovascular disease is defined as "all conditions with various cerebral symptoms due to blockage or rupture of blood vessels in the brain," including cerebral infarction, cerebral hemorrhage, and subarachnoid hemorrhage.
Brain contusions and encephalitis following a traffic accident are not specific conditions under the long-term care insurance system because they are not caused by ruptured or blocked blood vessels in the brain.
Long-term care insurance can only be used after the age of 65 even if there is still a high level of brain dysfunction after a traffic accident etc. 
Source: About Advanced Brain Dysfunction
At the end
In this article, we discuss the causes of high brain dysfunction and welfare services by age.
I'd be happy if you could refer to it.
Citations/references
1) Disability Welfare Division, Welfare Bureau, Aichi Prefectural Welfare Bureau: Advanced Brain Dysfunction. 2021
https://www.waraidaiko.org/_files/ugd/aafabf_5f91898791d242478cc4003e77b917d1.pdf
2) Ministry of Health, Labour and Welfare: Nursing care insurance system
https://www.mhlw.go.jp/content/12300000/000362938.pdf
☆*:.｡. Thank you for reading to the end.｡.:*☆
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This article was reprinted on October 17 , 2022 on Aoi Hashima's blog " Stroke Rehabilitation Longevity Consultation Center " .