Hi there. You have
short term memory loss and you are young. The causes for this loss of
memory could be many like lack of sleep, hurried up routine, psychogenic memory loss after a stressful and life threatening event, vitamin B1 deficiency, certain drug abuse like PCP, LSD and cocaine. Some prescription drugs can also be the culprit like barbiturates, tricyclic anti depressants etc. brain infections like encephalitis and head trauma are other rare causes.