What does "adverse event" mean?

Any occurrence that has any negative (deleterious) influence (in any degree from mild to severe).

What is a synonym for "adverse event"?

Common synonyms include: complications, headache, misfortune.

noun

noun ·Rare ·Advanced level

Noun

1
Any occurrence that has any negative (deleterious) influence (in any degree from mild to severe).
"adverse events in the treatment group"

"adverse events in the treatment group"