BDD usually develops in adolescence, a time when people usually worry about their appearance the most. However, many people with BDD suffer for years before they look for help. When they do look for help to Doctors, people with the problem often say they have other problems, for example, depression, social anxiety, or obsessive-compulsive disorder, but do not say their real problem is with the way they look. Most patients can not be convinced that the problem they have with their body is only 'imagined', and that they are seeing a 'changed' view of themselves, because people do not know much about BDD, compared to other mental problems, for example OCD or others.
The DSM (Diagnostic and Statistical Manual of Mental Disorders) IV says that a person must have the things written below if they have BDD:
A person with BDD will often do these things:
Dr. Katharine Philips did research, with more than 500 people with BDD, on the percentage of patients unhappy with the most common parts of the body;
source: "The Broken Mirror", Katharine A Philips, Oxford University Press, 2005 ed, p56
However, people with BDD often are unhappy about more than one part of their body.
A German study has shown that 1-2% of the population has complete BDD, but a bigger percentage of people show some of the effects ("Psychological Medicine", vol 36, p 877).
The number of men and women with BDD is around the same, but there are slightly more women with it. However, the number of men and women who go to the doctor with it are the same.
Studies show that BDD is common non-clinical places and clinical places. Research was done on 200 people with DSM-IV BDD. These people were aged 12 and older. They were interviewed. The people with BDD were found from 'mental-health doctors', advertisements, their friends and family, and non-psychiatrist physicians. 53 of the 200 people were receiving medication, 33 were receiving psychotherapy, and 48 were receiving both medication and psychotherapy. How bad each person's BDD was, was assessed using the "Yale-Brown Obsessive Compulsive Scale", modified for BDD. Symptoms were assessed with the Body Dysmorphic Disorder Examination. Both tests were made just for BDD. The results showed that BDD is in 0.7% - 1.1% of community samples and 2%-13% of non-clinical samples. 13% of psychiatric patients had BDD. Research also found that some of the patients who were firstly diagnosed with OCD, also had BDD. 53 patients with OCD and 53 patients with BDD were compared to each other in research. Clinical features, comorbidity, family history, and population features were compared between the two groups. 9 of the 62 subjects (14.5%) of those with OCD also had BDD.
In most examples, BDD is not found even when people have it. In research done on 17 patients with BDD, BDD was 'found' in only five patients, and none of the patients had a proper diagnosis of BDD even though they all in fact had BDD.
BDD can cause only a few problems for some people. However, for other people, it can cause many problems.
It can make it very difficult to have a normal job or family life. People who have a job or a family to care for would definitely find life easier and better if they did not have BDD. The love partners of BDD people can also suffer, as they may sometimes lose their loved one to suicide. Friendship, romance, and family is very hard to hold for a person with BDD, as the unhappiness with the looks of the person takes over their life, so they often do not bother with the other aspects of life as much. Also, the BDD stops the person from making these 'bonds' with people, as they always feel scared about the way they look, and therefore find it difficult to be themself with other people.
People with BDD may often have little motivation for anything. This means that BDD people can appear to take a long time to get everything done. However, this is not exactly true, because BDD sufferers will often just stop what they were doing for a long time, so it is not just that they are slow, but find it difficult to concentrate on what they are doing. without being able to actually motivate themselves until it becomes completely necessary to get back up. This low amount of motivation can be in all parts of a person's life, for example, school, friends, love, family, or work.
However, when the person is trying to do things to the way they look, such as combing their hair, or choosing clothes, it is common for the person to have an extreme motivation. Therefore, people with BDD can sometimes not feel motivated for anything in their life, but when they are working on their looks, they will have an extreme motivation that is not normal either.
People with BDD have a very high suicide rate compared to all mental problems.
Phillips & Menard did a lot of research in 2006 about BDD suicides.
Some people say that there is a link between undiagnosed BDD and a higher than average suicide rate with people who had cosmetic surgery.
Another condition, Gender identity disorder (GID), where the person finds his or her gender as a male or female uncomfortable, often has BDD-like feelings that are only directed at the primary and/or secondary sex characteristics on their body, which disagree with the person's perception of their own gender since birth. People with GID may also have BDD-like traits or their condition may be mis-diagnosed as BDD. Most studies reported a pre- transition GID suicide attempt rate of 20% or more. The suicide attempt rate for patients with BDD is 15%. No studies are available showing overlap between GID and BDD suicide rate because BDD is excluded as a condition prior to GID diagnosis.
BDD and GID are different conditions. One of the key differences is the fact that BDD responds to psychopharmacology, whereas GID does not. Furthermore, psychopharmacology or psychotherapy are often successful in convincing the BDD sufferer that their perceptions are distorted. Those with GID are rarely convinced that they are mistaken. GID (especially "transsexualism") also often manifests during early childhood, rather than during adolescence. It is standard practice in treating BDD to convince sufferers that surgical procedures are not necessary because eradicating their first perceived defect through surgery will only make them start obsessing about their next perceived defect, whereas those people properly diagnosed as "transsexual" under GID benefit greatly from surgical procedures specifically targeted at their primary or secondary sex characteristics. However, a person with GID may also have BDD if they obsess over perceived defects on their body that contradict or go beyond their gender identity.
BDD is often wrongly thought of as a 'vanity' obsession, but it is actually the opposite, because people with BDD believe they are very ugly, even though people without BDD do not think they are. There is not usually actually anything wrong with the way the person with BDD looks, but to that person, there is. A person with BDD can spend hours looking in the mirror, but they are not being vain, as they do not think they are attractive. People with BDD usually realize that worrying about their looks so much is bad, but they can not help it.
ALSO a person with BDD may alternatively avoid mirrors at all costs. Or any reflective surfaces for that matter. Including spoons, windows, mirrors, etc.