Answer:
Obsessive compulsive disorder
Step-by-step explanation:
Obsessive Compulsive Disorder (OCD) is a common, chronic and lasting disorder. It is characterized by the presence of obsessions (repetitive thoughts) and / or compulsions (repetitive behaviors). It is a hard-to-manage mental disorder, marked by inconvenient thoughts that invade the head without warning. They are followed by a rite or repeated behavior, which serves as an escape to calm the mind. This is the case of the subject with an irrational terror of bacteria who stops touching knobs and compulsively washes his hands so as not to become contaminated.