Intrusive thoughts are unwanted and distressing thoughts or mental images that occur involuntarily and repeatedly. They can be intrusive, persistent, and difficult to control. These thoughts often go against a person's values, causing them distress and anxiety. Intrusive thoughts can vary in content and may involve themes such as violence, harm, contamination, destruction, or sexual acts. for example while boiling eggs the Intrusive thoughts tell you to pour the hot water on your skin.