Obsessive-Compulsive Disorder (OCD)

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A person with obsessive compulsive disorder (OCD) experiences intrusive, unwanted and uncontrollable thoughts or mental images (obsessions). To reduce the anxiety caused by these thoughts they engage in repetitive actions or behaviours (compulsions). These obsessions and compulsions are distressing and cause extreme disruption to everyday life. The types of obsessions and compulsions experienced and the severity of these symptoms can change over time and may be triggered by stress. 

Obsessions and compulsions are linked. A person with OCD feels they need to perform these repetitive behaviours or actions to reduce the anxiety and distress caused by the thoughts. Common compulsions include repeatedly checking things, counting, tapping, or washing your hands for longer than or more than needed. Once these behaviours are complete the anxiety reduces. However, these thoughts and images occur again and again, and the behaviours and anxiety continue to increase over time.

Risk factors in the development of OCD include a family history of OCD, experiencing a stressful life event, and the presence of other mental health disorders. There is also growing evidence that in those with OCD there are physical changes in areas of the brain involved in controlling thoughts and actions.

Common symptoms
  • Persistent, intrusive, unwanted thoughts and mental images that lead you to perform repetitive behaviours.
  • Feeling that you need to engage in the behaviour to stop these thoughts/ mental images.
  • Obsessions and/or compulsions take up excessive amounts of time - more than 1 hour per day.
  • Obsessions and/or compulsions interfere with daily routines and cause significant distress. E.g. they have a negative impact on school/ work/ relationships.
  • Trying to ignore the thoughts or stop the behaviours increases anxiety and distress.
  • Performing the behaviours/ compulsive acts reduces anxiety and stress.
  • Difficulty sleeping
  • Low mood
  • Feeling anxious
  • Panic attacks - sudden intense fear and anxiety causing physical anxiety symptoms.
  • Thoughts of harming yourself
  • Thoughts of suicide or death
How common is in the general population
It is estimated that 1-2% of the general population will experience OCD.
Gender differences
OCD is more common in women than men.
Onset
OCD commonly begins in childhood or adolescence. Average age of onset is 19 years old.
Typical Course
OCD is usually a lifelong problem. Even with treatment OCD symptoms may still be present. Obsessions and compulsions often start gradually and the severity can vary over time with symptoms getting worse when a person is experiencing stress.
Common Comorbid (concurrent) Conditions
Anxiety disorders, depression, tic disorders, substance use disorder, suicidal thoughts.
Common treatments

OCD is commonly treated with a combination of psychological therapy and medication. Although treatment may not cure OCD, it can successfully reduce the symptoms and the distress and anxiety caused by these symptoms. Seeking help early can lead to better outcomes, so if you think you have OCD it is important to speak with your doctor. 

Psychological Therapy:

Exposure and response prevention (ERP) therapy and cognitive behavioural therapy (CBT) are common psychological therapies used to treat OCD.

ERP therapy is a form of behavioural therapy in which the individual is gradually exposed to situations that cause obsessions and anxiety. The aim of ERP is to teach coping skills to help control compulsions and reduce anxiety when these thoughts and mental images are experienced.

CBT is a structured form of talk therapy which combines cognitive and behaviour therapies. CBT for OCD aims to change the way you respond to the thoughts and mental images (obsessions) and teach coping strategies to reduce distress and anxiety.

Medication:

Antidepressants are commonly prescribed in the treatment of OCD to help reduce intrusive thoughts and anxiety, control compulsions, and improve mood. You may need to trial several types and different doses of medication with your doctor to find one that is effective for you. 

Other Treatments:

Transcranial magnetic stimulation (TMS) may be used to treat adults with OCD who have not had success with psychological therapy and medication. During TMS an electromagnetic coil is placed on the head and short magnetic pulses are sent into particular areas of the brain. This aims to stimulate nerve cells to reduce symptoms. 

Those who are experiencing severe OCD which is having a major impact on their daily functioning may require residential treatment or a more intensive outpatient treatment programme. 

Other Ways to Manage OCD:

Joining a support group and talking to others about their experience with OCD can be helpful. 

Meditation, deep breathing, progressive muscle relaxation, and other relaxation techniques can help to reduce general anxiety and stress.

It is also important to look after your general physical and mental health by maintaining a healthy lifestyle. Stay physically active, eat a healthy balanced diet, get good sleep, and find hobbies you enjoy.