What you need to know about obsessive-compulsive disorder (OCD)

Obsessive-compulsive disorder (OCD) is a mental health condition that involves distressing, intrusive, obsessive thoughts. These can lead a person to do unwanted, compulsive physical actions, such as repeated safety checks or avoiding germs.

Approximately 2% of the population have OCD. About half of the time, the symptoms appear during childhood or adolescence, and this rarely happens after the age of 40.

OCD is an anxiety disorder, and it is one of several conditions involving obsessive thoughts and compulsive behavior.

Having OCD can significantly affect a person’s quality of life and their well-being.

What is OCD?

OCD is a mental health condition that involves an obsession or compulsion, distressing actions, and repetitive thoughts. It can be challenging for a person with OCD to carry out routine tasks.

A person with OCD typically:

  • has thoughts, images, or urges that they feel unable to control
  • does not want to have these intrusive thoughts and feelings
  • experiences a significant amount of discomfort, possibly involving fear, disgust, doubt, or a conviction that things must be done in a certain way
  • spends a lot of time focusing on these obsessions and engaging in compulsions, which interferes with personal, social, and professional activities

Types

OCD can affect different people in different ways. It may involve:

Concern with checking

A person with OCD may feel the need to check repeatedly for problems. This might include:

  • checking taps, alarms, door locks, house lights, and appliances to prevent leaks, damage, or fire, for example
  • checking their body for signs of illness
  • confirming the authenticity of memories
  • repeatedly checking communication, such as e-mails, for fear of having made a mistake or offending the recipient

Fears of contamination

Some people with OCD feel a continual, overwhelming need to wash. They may fear that objects that they touch are contaminated.

This can lead to:

  • excessive tooth brushing or hand washing
  • repeatedly cleaning the bathroom, kitchen, and other rooms
  • avoiding crowds for fear of contracting germs

Some people experience a sense of contamination if they feel that someone has mistreated or criticized them. They may try to remove this feeling by washing.

Hoarding

This involves a person feeling unable to throw away used or useless possessions.

Intrusive thoughts

This involves feeling unable to prevent repetitious unwanted thoughts These may involve violence, including suicide or harming others.

The thoughts can cause intense distress, but the person is unlikely to act in a way that reflects this violence.

A person with this type of OCD may fear that they are a pedophile, even with no evidence to support this.

Symmetry and orderliness

A person with this type of OCD may feel that they need to arrange objects in a certain order to avoid discomfort or harm.

They may repeatedly rearrange the books on a shelf, for example.

Symptoms

OCD involves obsessions, compulsions, or both. These can cause distress and interfere with the person’s ability to perform routine activities.

Below, learn more about obsessions and compulsions.

Obsessions

While everyone worries, in people with OCD, worries and anxiety can take over, making it hard to carry out everyday tasks.

Common topics of this anxiety include:

  • Contamination, by bodily fluids, germs, dirt, and other substances
  • Losing control, such as the fear of acting on an urge to self-harm or hurt others
  • Perfectionism, which may involve the fear of losing things or an intense focus on exactness or remembering things
  • Harm, including a fear of being responsible for a catastrophic event
  • Unwanted sexual thoughts, including thoughts about inappropriate activities
  • Religious or superstitious beliefs, such as a concern about offending God or stepping on cracks in the sidewalk

Compulsions

Not every repetitive behavior is a compulsion. Most people use repetitive behaviors, such as bedtime routines, to help them manage everyday life.

For a person with OCD, however, the need to perform repetitive behavior is intense, it occurs frequently, and it is time-consuming. The behavior may take on a ritualistic aspect.

Some examples include:

  • washing and cleaning, including handwashing
  • monitoring the body for symptoms
  • repeating routine activities, such as getting up from a chair
  • mental compulsions, such as repeatedly reviewing an event

OCD in children

The first signs of OCD often appear in adolescence, but they sometimes emerge in childhood.

Complications among young people, including children, with OCD include:

  • low self-esteem
  • disrupted routines
  • difficulty completing schoolwork
  • physical illness, due to stress, for example
  • trouble forming or maintaining friendships and other relationships

When OCD begins in childhood, it may be more common in males than females. By adulthood, however, it affects males and females at equal rates.

Causes

Experts do not know what causes OCD, but there are various theories. Genetic, neurological, behavioral, cognitive, and environmental factors may all contribute.

Genetic causes

OCD appears to run in families, suggesting a possible genetic link, which experts are have suggested that the brains of people with OCD function with characteristic differences. Genes that affect how the brain responds to the neurotransmitters dopamine and serotonin, for example, may play a role in causing the disorder.

Autoimmune-related causes

Sometimes, symptoms of OCD appear in children after an infection, such as:

  • group A streptococcal infections, including strep throat
  • Lyme disease
  • the H1N1 flu virus

Clinicians sometimes call this occurrence of OCD symptoms pediatric acute-onset neuropsychiatric syndrome (PANS).

In a child with PANS, the symptoms start suddenly and reach full intensity within 24–72 hours. They may then disappear but return at a later date.

Behavioral causes

One theory suggests that a person with OCD learns to avoid fear associated with certain situations or objects by performing rituals to reduce the perceived risk.

The initial fear may begin around a period of intense stress, such as a traumatic event or significant loss.

Once the person associates an object or circumstance with this feeling of fear, they begin to avoid that object or situation in a way that comes to characterize OCD.

This may be more common among people with a genetic predisposition for the disorder.

Cognitive causes

Another theory is that OCD starts when people misinterpret their own thoughts.

Most people have unwelcome or intrusive thoughts at times, but for people with OCD, the importance of these thoughts becomes more intense or extreme.

Take the example of a person caring for an infant while under intense pressure and having intrusive thoughts of accidentally harming the baby.

A person might usually disregard these thoughts, but if the thoughts persist, they may take on unwarranted significance.

A person with OCD may become convinced that the action in the thought is likely to happen. In response, they take excessive, continual action to prevent the threat or danger.

Environmental causes

Stressful life events may trigger OCD in people with a predisposition, genetic or otherwise.

Many people have reported that the symptoms appeared within 6 months of events such as:

  • childbirth
  • complications during pregnancy or delivery
  • a severe conflict
  • a serious illness
  • a traumatic brain injury

Also, OCD may occur alongside post-traumatic stress disorder, or PTSD.

Diagnosis

Doctors look for specific criteria when diagnosing OCD, including:

  • the presence of obsessions, compulsions, or both
  • obsessions and compulsions that are time-consuming or cause significant distress or impairment in social, occupational, or other important settings
  • OCD symptoms that do not result from the use of a substance or medication
  • OCD symptoms that cannot be better explained by another health issue

Many other disorders, such as depression and anxiety, have similar features to OCD, and they can also occur alongside OCD.

Treatment

There are effective treatments for OCD. The right approach depends on the person’s set of symptoms and the extent that they affect the person’s life and well-being. Some effective options include:

Conclusion

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