Answer:
posttraumatic stress disorder
Explanation:
Posttraumatic stress disorder -
It is the mental situation , which get activated by any terrifying act , which the person has encountered , in this disorder people encounter the similar feeling of the tragedy like some bad memories , nightmares , etc. , which may lead to stress , tension and bad thoughts .
The symptoms of such disorder starts in a month or so from the time of the terrifying event .
The symptoms of this disorder leads to very negative and and stressful situation in the personal and social life and thereby hindering the day - to day task of the person severely .