I feel like whenever there is a physician as the patient in the question stem, you should just start thinking substance abuse disorders. Not the first time I've seen this.

Acute stress disorder involves flashbacks of traumatic event, avoidance of triggers, depressed mood, and nightmares; lasts 3 days - 1 month; can evolve to PTSD if lasts >1 month

Panic Disorder is recurrent and happens unexpectedly without known triggers

Biploar and Histrionic easily ruled out

Alcohol Withdrawal is left as the right answer. Symptoms also match with time course. Delirium tremens 2-4 days after last drink