Info on obsessive-compulsive disorder (OCD)

What is obsessive-compulsive disorder?

Everyone has bothersome worries now and again. Worries that consume a person are called "obsessions." Obsessions are uninvited or "intrusive" thoughts, urges or images that surface in the mind over and over again. People with obsessive-compulsive disorder (OCD) usually know that their obsessions are creations of their own minds, but they can't control, ignore or get rid of them.

Often people with OCD will try to reduce or suppress their obsessions by acting out certain rituals. Many people have rituals, or specific ways of doing things. For people with OCD, however, rituals may become "stuck," and last for hours. When taken to this extreme, rituals are called "compulsions."

When obsessions and compulsions get out of control, it is called obsessive-compulsive disorder.

OCD is an anxiety disorder that affects about one adult in 40. OCD exists throughout the world and affects men and women at an equal rate. OCD usually begins gradually. Approximately two-thirds of people with OCD develop the disorder in adolescence or early adulthood.    Back to top

What are the symptoms of obsessive-compulsive disorder?

The main symptoms of OCD are recurrent obsessions or compulsions that interfere with a person's life. The symptoms:
• take up more than one hour a day or
• cause marked distress or significant impairment.

At some point, the person is aware that the obsessions or compulsions are excessive or unreasonable. Often, they feel ashamed.

Common obsessions include:
• fear of contamination (fear of dirt, germs, body fluids or diseases
• repeated doubting (e.g., whether the stove is turned off )
• focus on exactness and order
• preoccupation with religious images and thoughts or fear of having blasphemous thoughts
• fear of harming oneself or others
• fear of blurting out obscenities in public
• forbidden or unwanted sexual thoughts, images or urges.

Common compulsions include excessive:
• cleaning/washing (e.g., washing hands too often, cleaning household
• items or other objects)
• checking (e.g., repeatedly checking paperwork for mistakes)
• ordering/arranging (e.g., making sure objects are in a certain order)
• hoarding (collecting seemingly useless items, such as paper, magazines, towels, bottles or pieces of garbage)
• mental rituals, such as praying, counting, or repeating words.    Back to top

	OCD Services Treatment from CAMH  Help for families  Connex Ontario 24/7 Info

What causes obsessive-compulsive disorder?

OCD appears to be caused by a combination of psychological, biological and genetic factors.

Psychological factors
One theory suggests that people with OCD associate certain objects or situations with fear, and that they learn to avoid the things they fear or to perform rituals that help reduce the fear. Another theory suggests that people with OCD misinterpret their thoughts to an extent that they are threatened and frightened by their thoughts.

Biological factors
Research into the biological causes and effects of OCD has revealed a link between OCD and insufficient levels of the brain chemical serotonin (a neurotransmitter that plays a role in regulation of mood, aggression, impulse control, sleep, appetite, body temperature and pain).

Researchers have also found that people with OCD appear to have more than usual activity in areas of the brain that are thought to be involved in controlling feelings and actions.

Genetic factors
OCD seems to "run in the family." Researchers are looking for genes that might be linked to OCD. One possibility is that genes involved in regulating serotonin may be passed on through the generations.    Back to top

Adapted from Obsessive-Compulsive Disorder: A Guide for People with Obsessive-Compulsive Disorder and their Families © 2001 Centre for Addiction and Mental Health