What is the most common treatment for OCD?

Typically, for OCD, it's going to consist of medication management. Broadly speaking, most mental health professionals prescribe antidepressants, which is actually a really bad name for the medication. Antidepressants do a lot of different, unique things. They can curb panic attacks, limit OCD symptoms, fight depression, stop angry outbursts, and help patients cope with PTSD if you get the gist. So that's the main line of treatment, but then you might pursue something like exposure response prevention therapy at the same time, which works really well for the compulsions of OCD.