Mental health conditions
Obsessive-Compulsive Disorder (OCD)
When unwanted thoughts, doubts or urges and repetitive behaviours begin to consume time, cause distress or interfere with everyday life.
Obsessive-compulsive disorder (OCD) involves recurring intrusive thoughts, images, doubts or urges (obsessions) and/or repetitive behaviours or mental acts (compulsions). People often recognise that these experiences are excessive or unwanted, but still feel driven to respond to them to reduce anxiety or prevent a feared outcome.
Obsessions
Repeated unwanted thoughts, images, impulses or doubts—for example about contamination, harm, mistakes, morality, relationships or things not feeling “just right”.
Compulsions
Repeated checking, washing, ordering, counting, reassurance seeking, repeating actions or mental rituals carried out to reduce distress.
Avoidance
Avoiding people, places, objects or situations that trigger obsessions can gradually narrow everyday life.
Functional impact
OCD may affect study, work, sleep, relationships, parenting, self-care and the time needed to complete routine tasks.
People with OCD can experience disturbing sexual, aggressive, religious or death-related thoughts that are unwanted and frightening. These themes are recognised features of OCD and need careful clinical assessment rather than automatic assumptions about intent or risk.
When to seek an assessment
Consider professional assessment when obsessions or compulsions are difficult to control, take substantial time, cause marked distress, lead to avoidance, involve family members in rituals or interfere with normal functioning. OCD can occur alongside depression, other anxiety disorders, tic disorders, eating disorders, alcohol or substance problems and other mental-health conditions.
How OCD is assessed
Assessment explores the nature of the intrusive thoughts and rituals, how much time they take, the level of distress and impairment, avoidance, family accommodation, mood symptoms, suicide risk where relevant and any coexisting psychiatric or medical conditions. Diagnosis is based on the overall clinical picture rather than a single questionnaire.
Treatment
CBT with Exposure and Response Prevention (ERP)
Cognitive behavioural therapy that includes exposure and response prevention is a core evidence-based treatment for OCD. Treatment gradually helps the person face feared thoughts or situations while reducing rituals, reassurance or avoidance. The intensity is matched to severity, functioning and preference.
Medication
Selective serotonin reuptake inhibitors (SSRIs) are commonly used when medication is indicated. Choice, dose, duration, adverse effects, other medicines and physical-health factors should be reviewed with the prescribing clinician. More severe OCD may require combined psychological and medication treatment.
Family involvement
Families may unintentionally become part of checking, reassurance or avoidance routines. When appropriate, treatment can help relatives support recovery without reinforcing compulsions.
When symptoms do not improve
Persistent or severe OCD may require multidisciplinary review, confirmation of diagnosis, assessment of treatment adherence and adequacy, review of coexisting conditions and a specialist treatment plan.
Adult PsychiatryPsychiatric assessment and treatment for adults.
Child & Adolescent PsychiatryAge-appropriate care for younger people and families.
Preparing for an OCD assessment
- Note the main intrusive thoughts or rituals and how much time they take.
- List situations you avoid because of anxiety or compulsions.
- Bring details of current medicines and previous treatment if available.
- Consider whether family members are involved in reassurance, checking or rituals.
Frequently asked questions
Is OCD the same as being neat or perfectionistic?
No. OCD involves unwanted obsessions and/or compulsions that cause distress, consume time or impair functioning. Preference for order or high standards alone is not OCD.
Can OCD occur without visible rituals?
Yes. Some compulsions are mental, such as repeating phrases, reviewing memories, counting, neutralising thoughts or seeking internal certainty.
Can children and adolescents have OCD?
Yes. OCD can occur at different ages. Younger people may have difficulty explaining why they repeat behaviours or may involve family members in rituals.
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Clinical source
NICE CG31: Obsessive-compulsive disorder and body dysmorphic disorder — treatment recommendations
This information is for general education and does not replace an individual clinical assessment or professional medical advice.
OCD symptoms affecting daily life?
Ahana’s team can help you identify an appropriate assessment and treatment pathway.