What is a weakness of the neural explanation?

-The serotonin-OCD link may not be unique to OCD -Many people with OCd also experience clinical depression. Having 2 disorders together is called co-morbidity. -This depression probaly invovles (though is not necessarily caused by) disruption to the action of serotonin. This leaves use with a logical problem when it comes to serotonin as possible basis for OCD -It could simply be that serotonin activity is disrupted in many people with OCD because they are depressed as well. This means that serotonin may not be relevant to OCD symptoms