<unk>  (TLOC) is a brief period of unconsciousness which resolves spontaneously. It may be traumatic—as in a concussion—or non-traumatic in origin. Common causes of non-traumatic TLOC include syncope and epileptic seizures.
Transient loss of consciousness
Emergence delirium
Myxedema coma
Hypnoid state
Reflex syncope
Retrograde amnesia
Transient epileptic amnesia
Excited delirium