Neuroimaging studies to measure response to facial recognition have shown activity predominately in the left hemisphere in the left lateral prefrontal cortex, lateral temporal lobe and left parietal lobe showing hemispheric imbalance in information processing. There is a reported case of the development of BDD in a 21-year-old male following an inflammatory brain process. Neuroimaging showed the presence of a new atrophy in the frontotemporal region. Prevention
Prevention aims to promote a healthy development before the occurrence of eating disorders. It also intends early identification of an eating disorder before it is too late to treat. Children as young as ages 5–7 are aware of the cultural messages regarding body image and dieting. Prevention comes in bringing these issues to the light. The following topics can be discussed with young children (as well as teens and young adults). Emotional Bites: a simple way to discuss emotional eating is to ask children about why they might eat besides being hungry. Talk about more effective ways to cope with emotions, emphasizing the value of sharing feelings with a trusted adult. Say No to Teasing: another concept is to emphasize that it is wrong to say hurtful things about other peoples body sizes. Body Talk: emphasize the importance of listening to ones body. That is, eating when you are hungry (not starving) and stopping when you are satisfied (not stuffed). Children intuitively grasp these concepts. Fitness Comes in All Sizes: educate children about the genetics of body size and the normal changes occurring in the body.
They are generally mobile masses that can consist of:

Fibrous tissues and fluids
A fatty (keratinous) substance that resembles cottage cheese, in which case the cyst may be called "keratin cyst" - this material has a characteristic "cheesy" or foot odor smell
A somewhat viscous, serosanguineous fluid (containing purulent and bloody material)The nature of the contents of a sebaceous cyst, and of its surrounding capsule, differs depending on whether the cyst has ever been infected. With surgery, a cyst can usually be excised in its entirety. Poor surgical technique, or previous infection leading to scarring and tethering of the cyst to the surrounding tissue, may lead to rupture during excision and removal. A completely removed cyst will not recur, though if the patient has a predisposition to cyst formation, further cysts may develop in the same general area. Causes
Cysts may be related to high levels of testosterone, hence may be more frequent in users of anabolic steroids.A case has been reported of a sebaceous cyst being caused by the human botfly.Hereditary causes of sebaceous cysts include Gardners syndrome and basal cell nevus syndrome. Types
Epidermoid cyst
Pilar cyst
About 90% of pilar cysts occur on the scalp, with the remaining sometimes occurring on the face, trunk, and extremities. : 1477  Pilar cysts are significantly more common in females, and a tendency to develop these cysts is often inherited in an autosomal dominant pattern. : 1477  In most cases, multiple pilar cysts appear at once. : 1477

Treatment
Sebaceous cysts generally do not require medical treatment.