What Are the Types and Subtypes of OCD?

Disclaimer: This article is for educational purposes only and does not replace expert medical or mental health advice. The different subtypes of OCD require a comprehensive psychiatric evaluation by a qualified clinician. So, always refer to a licensed mental health specialist for diagnosis and treatment.

Obsessive-compulsive disorder (OCD) is a mental health condition characterized by unwanted, intrusive thoughts, urges, images, or sensations (obsessions) that lead to significant distress, and are followed by repetitive mental or behavioral acts (compulsions) performed to reduce anxiety or prevent a feared outcome.

While obsessive-compulsive disorder (OCD) is diagnosed as a single condition in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5-TR), symptoms can reflect specific themes. Clinicians often refer to these themes as “subtypes”. These are not separate diagnoses but clinical patterns that inform personalized care plans that meet you where you are.

The International OCD Foundation lists the following known subtypes of OCD:

Contamination OCD

Contamination OCD is characterized by a fear of germs, dirt, toxins, or moral contamination that leads to intense anxiety about spreading the contamination or becoming tainted.

These obsessions are followed by compulsive behaviors like excessive hand-washing, showering, sanitizing, avoiding public settings/objects/persons, discarding items, and other actions.

Checking OCD

Checking OCD is characterized by obsessive thoughts that lead to repeated verification to prevent mistakes, disasters, or danger, even if there is little to no risk of it happening. For instance, leaving the stove open, accidentally hitting someone while driving, and so on.

Common compulsive behaviors involve checking and rechecking locks and appliances, retracing driving routes, reading and rereading messages/emails, and seeking reassurance.

Perfectionism OCD

Perfectionism OCD, or “just right” OCD, is driven by an overwhelming need for things to feel "just right” or perfect. There is an intolerable sense of discomfort when asymmetry or imperfection exists. For instance, feeling that an object is not symmetrical or right, moving in the right way, and so on.

Common compulsive behaviors will involve arranging and rearranging objects until symmetry or perfection is achieved, repeating, rewriting, or recounting things until they feel right, and touching/tapping in patterns.

Religious OCD

Religious OCD is also known as scrupulosity; it is driven by an excessive fear of sinning, offending a higher power, or just being a morally bad person based on religious or ethical standards.

Common compulsive behaviors will involve excessive praying, confessing, or other religious rituals, visiting and revisiting places of worship, reading and re-reading texts, repeatedly seeking validation from religious authorities, and so on.

Harm OCD

Harm OCD is driven by intrusive thoughts about accidentally or violently endangering oneself or others, despite not having a desire or intention to be this way. For instance, obsessing over stabbing the partner, pushing a child off the balcony, or losing control and attacking someone.

Compulsive behaviors will involve avoiding sharp objects and people, mentally reviewing actions, and praying for safety.

Those with harm OCD are typically distressed by these thoughts and actively fear acting on them. These intrusive thoughts are ego-dystonic, meaning they are inconsistent with the person’s principles and intentions. Peer-reviewed studies show that OCD-related violent obsessions do not necessarily predict violent behavior.

If you are experiencing thoughts of hurting yourself or others, call 9-8-8 if you are in the U.S. If you are outside of the U.S., reach out to your national helplines immediately.

Postpartum OCD

Postpartum OCD, or perinatal OCD, is characterized by fears and anxieties over hurting, contaminating, or losing a newborn baby. For instance, the new parent may wonder whether they are going to contaminate, drop, lose, or even sexually molest their baby.

Compulsive behaviors that follow will typically be repeatedly checking or washing the baby, or even going to extreme lengths to avoid the baby.

Sexual Orientation OCD

Sexual orientation OCD is also known as homosexual OCD (HOCD). It is characterized by intrusive thoughts about one's sexual orientation, despite a consistent sexual identity and history. For instance, constantly wondering whether one is gay or bisexual, or ruminating over thoughts or images and assigning more meaning to them than is typical.

Common compulsive behaviors will involve avoiding certain people or media, mentally reviewing attractions, checking and rechecking reactions to thoughts or images, and repeatedly seeking validation.

Pedophilia OCD

Pedophilia OCD is underlined by unwanted, intrusive sexual thoughts about children, leading to extreme shame and fear of being "dangerous" - despite having no real attraction or intent of getting involved with children or minors.

Common compulsive behaviors will involve avoiding children (even one’s own), mentally checking arousal, comparing oneself to real offenders, and seeking reassurance from loved ones.

Please note that presentation is clinically distinct from pedophilia, which is a paraphilic disorder. In pedophilia OCD, the thoughts are intrusive, unwanted, and lead to significant anxiety and avoidance. In contrast, pedophilia involves a persistent sexual interest in children and is categorized separately in the DSM-5.

Relationship OCD

Relationship OCD is characterized by persistent thoughts regarding a romantic relationship, partner, or one's own feelings - even in a healthy relationship. For instance, constantly wondering whether one is in love or is just settling.

Common compulsions will involve overanalyzing feelings, testing the attraction, mentally reviewing past time together, comparing to exes or other persons, and seeking reassurance from the partner or other loved ones.

Sensorimotor OCD

Sensorimotor OCD is characterized by hyper-awareness toward normal automatic bodily processes, and this becomes obsessive and distressing. For instance, one can obsess over whether they are blinking too much or if their heart is beating too fast.

Common compulsive behaviors that follow are trying to control/suppress the sensation, constant monitoring, and avoiding quiet environments that amplify awareness.

Existential OCD

Existential OCD is defined by intrusive thoughts about reality, meaning of life, free will, death, and other existential questions/topics.

Common compulsive behaviors will involve endless philosophical research and rumination.

Some lesser-known subtypes of OCD are:,/p>

• Purely Obsessional OCD: “Pure O” OCD is characterized by mental and hidden obsessions that can be immoral, sexual, violent, or existential. Common compulsions will involve rumination, mental reviewing, and countering bad thoughts with good ones.
• Real Event OCD: Also known as false memory OCD, it is driven by a conviction that past acts were bad or harmful, leading to guilt-driven behaviors, like mentally reviewing, confessing, apologizing, and so on.

Yes, OCD and its subtypes can be effectively treated and managed with psychotherapy and medication. In fact, long-term outcomes show that 32–74% of those who seek treatment for OCD show meaningful improvements over a period of time.

Exposure and response prevention (ERP) therapy is the most widely used therapy to treat OCD. It exposes you to your obsessive thoughts and images in safe and controlled conditions, and you learn how to respond to them in healthier ways and adopt healthier coping mechanisms.

Other therapies like cognitive behavioral therapy and mindfulness therapy can also be beneficial.

Medications are used in combination with therapy for the best outcomes. Selective serotonin reuptake inhibitors (SSRIs) and antipsychotics are generally prescribed for OCD. Tricyclic antidepressants like clomipramine have also shown promise. Medication selection and planning are always made in close consultation with a board-certified physician or psychiatric practitioner.

If you are struggling with one or more subtypes of OCD, we understand how challenging it can be. At the NuView Treatment Center, we offer condition-specific, personalized outpatient care for OCD - where you can heal from your symptoms in a safe, non-judgmental setting, at your own pace.

Please do not hesitate to call us at (323) 307-7997 to connect with our experts today!

Are OCD subtypes officially diagnosed categories?

No. OCD subtypes are not formal diagnoses, but clinical descriptions used to understand symptom patterns, while the diagnosis is going to be OCD.

Can someone have more than one OCD subtype at the same time?

Yes, many experience overlapping OCD subtypes.

What makes Pure O and real event OCD different from other subtypes?

Pure O OCD is characterized by mental compulsive actions that are not visible. Whereas, with real event OCD, the obsessive concern and guilt exist over something that really happened, not something that might or is going to happen.

Do OCD themes reflect a person’s true desires or personality?

No. OCD gives rise to thoughts that feel deeply distressing and ego-dystonic, but do not reflect a person’s true desires or personality.

Does treatment change based on OCD subtype?

The core treatment options (like ERP) remain consistent, but exposures are tailored to the subtype.