Obsessive compulsive disorder - OCD treatment and therapy from NOCD

What does OCD mean? Understanding Obsessive-Compulsive Disorder

By Taneia Surles, MPH

Mar 14, 2025

Reviewed byApril Kilduff, MA, LCPC

What is OCD? It involves a cycle of obsessions and compulsions. It affects 1 in 40 people. It is complex, but highly treatable.

OCD stands for obsessive-compulsive disorder (OCD), a mental health condition where people experience unwanted, intrusive thoughts (called obsessions) and feel the urge to perform repetitive behaviors (known as compulsions) to relieve distress or prevent something bad from occurring. These symptoms can be time-consuming, exhausting, and deeply disruptive to daily life, but OCD is highly treatable with the right help.

In this article, we’ll further explore the signs and symptoms of OCD, what causes it, and the treatments available.

What does OCD look like?

People with OCD often experience:

  • Obsessions: Re-occurring thoughts, images, urges, feelings, or sensations that feel intrusive, disturbing, or out of character.
  • Compulsions: Repetitive physical or mental acts they feel driven to do in response to those thoughts or to prevent a feared outcome. Examples include checking, cleaning, repeating, or mentally reviewing.

These cycles can take up several hours of the day and leave you feeling drained or ashamed.

Examples:

  • Obsession: What if I hit someone with my car and didn’t notice?
  • Compulsion: Repeatedly driving around the block to check.
  • Obsession: I could be contaminated by germs from the subway.
  • Compulsion: Washing hands until they’re raw.

Common types of OCD

While OCD looks different for everyone, it often falls into specific subtypes or themes.

Below is a list of some of the most common types of OCD:

  • Contamination OCD: Fear of germs, illness, or environmental toxins
  • Harm OCD: Fear of causing harm to yourself or others
  • Relationship OCD (ROCD): Intrusive doubts about your relationships—romantic or platonic
  • Sexual Orientation OCD (SO-OCD): Significant distress over your sexual identity despite no desire to change it
  • Scrupulosity OCD: Fears around morality, religion, or doing the “right” thing

If you can’t find a subtype on this list that matches your symptoms, that doesn’t mean you don’t have OCD. Everyone’s situation is unique and may not fit neatly into any specific theme. Plus, many people with OCD tend to have more than one subtype at once, and they can change over time.

What causes OCD?

Researchers and mental health professionals don’t know the exact cause of OCD, but the following factors may contribute:

  • Genetics: OCD can run in families
  • Brain chemistry: Certain differences in brain structure or serotonin levels
  • Environment: Stressful life events, trauma, or infections (e.g., PANDAS/PANS) may play a role

Whatever the cause, OCD isn’t your fault, and you can take steps toward recovery.

How OCD is diagnosed

OCD is recognized by the major diagnostic systems used by clinicians worldwide.

ICD-10 code for OCD

In the International Classification of Diseases, 10th Edition (ICD-10), OCD falls under the code F42:

  • F42.0 – Predominantly obsessive thoughts
  • F42.1 – Predominantly compulsive behaviors
  • F42.2 – Mixed obsessions and compulsions
  • F42.8 – Other types of OCD
  • F42.9 – OCD, unspecified

These codes help providers diagnose and document the condition for treatment and insurance purposes.

DSM-5 criteria

In the U.S., providers often use the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), which defines OCD as a condition involving:

  • Persistent obsessions, compulsions, or both
  • Significant distress or life disruption
  • Symptoms not better explained by another condition

How is OCD treated?

Several treatment options for OCD exist, with the most effective approach often being a combination of therapy and, in some cases, medication. It’s crucial to work with a mental health professional with specialized training in OCD who can guide you toward the right treatment plan for your needs.

Exposure and response prevention (ERP) therapy

ERP therapy is a specialized form of CBT proven to be effective for OCD. General CBT, if not tailored for OCD, can sometimes be unhelpful or even worsen symptoms. ERP helps you gradually face your fears without performing compulsions.

Find the right OCD therapist for you

All our therapists are licensed and trained in exposure and response prevention therapy (ERP), the gold standard treatment for OCD.

Medication

Selective serotonin reuptake inhibitors (SSRIs) are often prescribed for OCD and can be especially helpful for people with moderate to severe symptoms. These medications can reduce the intensity of obsessions and compulsions, making ERP therapy easier to engage in. Common SSRIs used to treat OCD include fluoxetine (Prozac), fluvoxamine (Luvox), and sertraline (Zoloft). 

Acceptance and commitment therapy (ACT)

ACT is sometimes used alongside ERP therapy to help people accept distressing thoughts rather than trying to eliminate them. It focuses on clarifying values and committing to actions that align with those values, even in the presence of discomfort.

Mindfulness-based approaches

Mindfulness strategies may be used to support ERP therapy by helping you notice intrusive thoughts without reacting to them. However, mindfulness on its own is not considered a primary treatment for OCD and should never be used to avoid discomfort.

Transcranial magnetic stimulation (TMS)

TMS is a non-invasive brain stimulation therapy that can help reduce OCD symptoms when ERP therapy and medications aren’t enough. 

Intensive and higher-level care

For people with severe or treatment-resistant OCD, higher levels of care may be recommended:

  • Deep brain stimulation (DBS)
  • Intensive outpatient programs (IOPs)
  • Gamma knife radiosurgery (GKRS)
  • Focused ultrasound (FUS)

Frequently asked questions about OCD

What does OCD stand for?

OCD stands for obsessive-compulsive disorder, a condition involving intrusive thoughts and repetitive physical or mental behaviors.

What does OCD mean?

OCD means a person experiences distressing thoughts or fears and feels compelled to take actions to feel safe or “just right.” These actions offer temporary relief, but they don’t fix the root cause.

Is OCD a serious mental illness?

Yes, but it’s also highly treatable. Many people with OCD live full, meaningful lives with the right support.

What are some signs of OCD?

Signs include:

  • Repetitive, distressing thoughts (e.g., about harm, germs, or morality)
  • Feeling the need to perform rituals or avoid certain situations
  • Difficulty stopping the cycle, even when it doesn’t make logical sense

Bottom line

If you believe you have OCD, it’s crucial to seek help from a therapist who specializes in OCD to get an assessment, diagnosis, and personalized treatment plan. It can be devastating to deal with OCD on a day-to-day basis, but there is help available.

Key takeaways

  • OCD is a mental health condition involving intrusive thoughts (obsessions) and repetitive behaviors (compulsions).
  • The most effective treatment for OCD is exposure and response prevention (ERP) therapy, often supported by medication. 
  • Additional therapeutic approaches—such as ACT and TMS, and, in rare cases, DBS, IOPs, GKRS, or FUS—can help support people with complex or treatment-resistant OCD.
  • While OCD symptoms can be severe, the condition is highly treatable with the right support and expert-guided therapy.

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