The following differential diagnostic possibilities are to be considered: Acute stress disorder ( ASD ) Posttraumatic stress disorder ( PTSD ) Fatigue Alcohol abuse Hallucinogen persisting perception disorder ( HPPD ) Obsessive–compulsive disorder ( OCD [flexikon.doccheck.com]

Episodes might be accompanied by phenomenons such as sweating, palpitations, and shaking. Drug-induced flashbacks can cause the patient to re-experience previous hallucinogenic episodes. [flexikon.doccheck.com]

Flashbacks can contain different emotions, including anger, happiness, fear, and grief. They usually only last a few seconds, up to one minute. Episodes might be accompanied by phenomenons such as sweating, palpitations, and shaking. [flexikon.doccheck.com]