Freak Out This Summer With All New MONK!

Adrian Monk, a former San Francisco police detective, suffers from OCD as he helps solve various crimes and murders around the city.

As shown in the clip, Monk is compelled to make everything (including himself) clean and orderly. How and why does someone become phobic of so many everyday situations? Why do people often develop OCD? Monk always had issues with OCD, but got much worse after his wife died.

Why would a traumatic event affect a seemingly unrelated disorder?