Understanding OCD triggers is important for properly treating obsessive-compulsive disorder. OCD triggers are events, thoughts, or situations causing powerful impulses to execute compulsions or have obsessive thoughts. These triggers differ considerably from person to person, making OCD a highly unique condition. Common OCD triggers include infection anxieties, which lead to obsessive cleaning or hand-washing; fear of injury, which results in repeated lock or appliance checks; and symmetry or neatness needs, which cause compulsive organizing or counting. This can be done by self-reflection or with the assistance of a mental health professional.