Read the following case study and answer the questions that follow: Sundar, a college going 20-year-old male, has moved from his home town to live in…

Read the following case study and answer the questions that follow : Sundar, a college going $\displaystyle 20$-year-old male, has moved from his home town to live in a big city. He has continuous fear of insecurity and feels that the enemy soldiers are following him. He gets very tense when he spots anyone in a uniform and feels that they are coming to catch him. This intense anxiety is interfering with his work and relationship, and his friends are extremely concerned as it does not make any sense to them. Sundar occasionally laughs abruptly and inappropriately, and sometimes stops speaking mid-sentence, scanning off in the distance as though he sees or hears something. He expresses concern about television and radio in the room potentially being monitored by the enemies. His beliefs are fixed and if they are challenged, his tone becomes hostile. Based on the symptoms being exhibited, identify the disorder. Explain the other symptoms that can be seen in this disorder.