0 a condition in which someone is unable to remember things that happen before the event that caused the condition, which may be a brain injury, a serious illness, a stroke (= a change in the blood supply to the brain that can make you unable to move particular parts of the body), etc.:
Total retrograde amnesia is very rare.
A rare form of retrograde amnesia was diagnosed.
The majority of patients are left only with an amnesic gap for the period of coma, together with a variable amount of retrograde amnesia for part of the recovery period.
