Hi, From the question, you are suffering from Post Traumatic Stress Disorder (PTSD). It is a mental condition following a terrific event that affects the normal mood of the individual. In PTSD, the person may feel fearful, anger, irritable, etc. The symptoms categorized under four headings, Reliving, Arousal, Negative thoughts and Avoiding. Insomnia, isolation, depression, aggression, irritable, anxious, hallucinations, nightmares are some of the conditions people suffer in PTSD. This may comes months after the event. Some people may recover soon and in some it may take too much time. Management include Psychotherapy and Medications. Medications include SSRIs, Tricyclic antidepressants, Mood stabilizers and antipsychotics. Serta 5omg tablets belong to the group of SSRIs. Psychotherapy includes Cognitive behavioural therapy, Family therapy, exposure therapy and group therapy. Visit a psychiatrist and follow up the instructions and therapies properly to overcome the disorder. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Pradeepraj, General & Family Physician