second impact syndrome

English

Alternative forms

• second-impact syndrome

Noun

second impact syndrome (usually uncountable, plural second impact syndromes)

1. A rapid and severe brain swelling caused by a second concussion before a first has sufficiently healed, such as may occur after suffering two concussions during the same sports match. It has catastrophic results and may cause death or permanent disability.

Synonyms

• SIS (abbreviation)

Coordinate terms

• post-concussion syndrome
• chronic traumatic encephalopathy (CTE)

Derived terms

• SIS (abbreviation)