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Concussion in adolescence can raise the risk of MS

Researchers who have studied whether concussion in childhood or adolescence is associated with subsequent multiple sclerosis (MS) have found that a head trauma can raise the risk of developing the condition in the future.

The study, 'Concussion in adolescence and risk of multiple sclerosis', was published in the Annals of Neurology.

Previous research has suggests an association, but methodological limitations included retrospective data collection and small study populations.

The national Swedish Patient Register and MS Register were used to identify all MS diagnoses up to 2012 among people born since 1964, when the Patient Register was established. The 7,292 patients with MS were matched individually with 10 people without MS by sex, year of birth, age/vital status at MS diagnosis, and region of residence (county), resulting in a study population of 80,212. Diagnoses of concussion and control diagnoses of broken limb bones were identified using the Patient Register from birth to age 10 years or from age 11 to 20 years. Conditional logistic regression was used to examine associations with MS.

Researchers discovered that concussion in adolescence was associated with a raised risk of MS, particularly if repeated. It is thought that this is possibly due to initiation of an autoimmune process in the central nervous system.

No notable association with MS was observed for concussion in childhood, or broken limb bones in childhood and adolescence.

Researchers concluded that these findings further emphasises the importance of protecting young people from head injuries.

Source: MS-UK

Date: 26/09/17

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