Not trying to imply anything either way and don't know the severity of the condition and the medical history, but JAR FCL3 does state:
A history of one or more episodes of [disturbance] of consciousness [of uncertain cause] is disqualifying. [A single episode of such disturbance of consciousness] may be accepted by the AMS when satisfactorily explained [but a recurrence is normally disqualifying].
It was on this basis that I suggested discussions with an AME.