Please read the passage and answer the questions that follow:

Mohan is a 16 years old boy studying in high school. He usually gets anxious in normal circumstances. He has bouts of anxiety attacks when his teachers give him any assignments. In normal times too, he shows symptoms like restlessness sleeplessness, loss of appetite, frequent urination rapid heart rate etc. He has unpleasant feelings of fear and apprehensions. After such observations his family members brought him to a psychologist for consultation. The psychologist took detailed information about his psychological attributes, history in the context of his physical & psycho-social environment and interviews with his parents. The parents recalled that their child has become anxious & fearful and is unable to relax. Gradually Mohan is isolating himself from all his near and dear ones.

On the basis of symptoms, Mohan is suffering from:

Anxiety disorders

Mohan's symptoms, including anxiety, restlessness, sleeplessness, loss of appetite, frequent urination, rapid heart rate, fear, and apprehension, are all consistent with anxiety disorders. Anxiety disorders are a group of mental health conditions characterized by excessive worry and fear.