1. Cleanliness and Order: Melvin is extremely obsessive about cleanliness and order. He has a strict daily routine that involves rituals like compulsively washing his hands, using separate towels for different body parts, and having a specific way of arranging his belongings. Any deviations from his routines cause severe anxiety.
2. Fear of Germs: Melvin has an intense fear of germs and contamination. He keeps his apartment spotlessly clean, wears gloves to avoid touching surfaces, and avoids any interactions that might expose him to dirt or bacteria.
3. Intolerant of Noise and Disorder: Melvin is highly sensitive to noise and disorder. He covers his ears when exposed to loud sounds and is agitated by messy or disorganized environments.
4. Rigid Habits and Routines: Melvin's compulsions extend to his daily habits. He has a specific schedule for everything, from waking up to eating and working. Any disruption to his routines causes significant distress.
5. Social Avoidance: Melvin's compulsions also lead to social avoidance. He has little tolerance for social interactions and often avoids situations where he might encounter other people. This isolation exacerbates his compulsions and makes it challenging for him to lead a normal life.
6. Need for Reassurance: Melvin constantly seeks reassurance from his neighbor Simon Bishop about the correctness of his actions. He doubts himself and frequently relies on Simon's validation to confirm his thoughts and behaviors.
These compulsions not only impact Melvin's personal life but also affect his relationships and ability to function in society. As the story progresses, he slowly begins to overcome his compulsions with the help of his interactions with the people around him.