Intrusive thoughts are a form of obsessive-compulsive disorder. Learn more about common types of intrusive thoughts and the treatment options. Are intrusive thoughts harmful? In a word, no. Dr. Edwards says researchers studied people with OCD and violent, intrusive thoughts and found no increased risk of acting on the thoughts . Having a disturbing thought does not mean you want to do what has popped into your head. What Are Intrusive Thoughts ? (2024 Guide) . Written by Dr. Elaine Ryan, a psychologist and a leading expert on intrusive thoughts and OCD. Intrusive Thoughts : Definition , Causes, Types, and How to Overcome Intrusive Thoughts Intrusive thoughts are unwanted, involuntary thoughts that can be distressing or disturbing in nature. These thoughts often occur suddenly and may involve fears, doubts, violent images, or inappropriate scenarios that contradict an individual’s values and beliefs. While intrusive thoughts are common, persistent and distressing occurrences may indicate underlying psychological conditions. In the rest of ...