Exposure-Response Prevention (ERP) is a type of CBT that focuses on behavior modification. ERP is an empirically supported therapeutic approach in the treatment of OCD and anxiety related disorders. ERP involves two components. The first is a gradual exposure to the feared “what if” situtation (the exposure part of treatment). The second is the simultaneous prevention of the compulsion (the response prevention part of treatment). The more a client confronts their triggers, the sooner they habituate to it, resulting a reduction of anxiety and compulsive urges.
“What if” thinking is not unique to Obsessive-Compulsive Disorder (OCD). It is a feature to a greater or lesser extent in several other conditions such as Generalized Anxiety Disorder (GAD), Body Dysmorphic Disorder (BDD), Social Anxiety Disorder, Panic Disorder, Specific Phobia (example: emetophobia - fear of throwing up), Post Traumatic Stress Disorder (PTSD), and Depression.
Follow the link below to see how ERP can be used to treat various conditions:
https://adaa.org/learn-from-us/from-the-experts/blog-posts/professional/exposure-and-response-prevention-what-if