Obsessive Compulsive Disorder (OCD)
People with OCD experience intensely negative, repetitive and intrusive thoughts, combined with a chronic feeling of doubt or danger (obsessions). In order to quell the thought or quieten the anxiety, they will often repeat an action, again and again (compulsions).
In BDD, there may be a pre-occupation with order and symmetry in appearance, which is very similar to OCD, for example wanting one’s hair to be symmetrical and to feel “right”. An additional diagnosis of OCD is only given when the obsessions are not restricted to concerns about appearance or there are other unrelated symptoms of OCD (e.g. fears of contamination).