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What Happens When OCD Is Left Untreated?

Medically Reviewed By:

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Dr. Marco M. Zahedi

Medical Director, Compassion Recovery Center

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Dr. Michael Majeski

Licensed Psychologist (LP), Compassion Recovery Center

Feature image for the blog: What Happens When OCD Is Left Untreated

Table of Contents

Imagine you’re driving home from work and you hit a small pothole. Most people would keep driving. But for you, a thought flashes into your mind: “What if that wasn’t a pothole? What if I hit someone?” You look in the rearview mirror and see nothing, but the doubt won’t leave. You drive back around the block once, then twice, then three times, just to be sure. This “mental loop” is a glimpse into the world of Obsessive-Compulsive Disorder (OCD).

We all have odd or intrusive thoughts from time to time. In fact, research shows that 94% of people experience them. However, for those with OCD, these thoughts don’t just pass through. They get stuck. Because these thoughts can be scary or taboo, many people hide them for years. In fact, it takes an average of 6 to 7 years for someone to seek help, and for some, that delay lasts over two decades.

Leaving OCD untreated isn’t just about dealing with quirks. It is a progressive condition that can reshape your mental, physical, and social life. Here is a look at the clinical trajectory of untreated OCD and why finding the right support is so vital.

What Is Obsessive-Compulsive Disorder (OCD)?

OCD is a clinical mental health condition that goes far beyond a desire for cleanliness or organization. It is characterized by two distinct parts: obsessions and compulsions. 

Obsessions are the intrusive, unwanted thoughts or images that trigger intense anxiety. 

Compulsions are the behaviors or mental acts a person performs to try and lower that anxiety or prevent a “bad thing” from happening.

In the United States, about 1.2% of adults had OCD in the past year, and roughly 2.3% of the population will meet the criteria at some point in their lives. While it is a common psychiatric disorder, the stigma surrounding it often prevents people from speaking up until the symptoms become unmanageable.

How Does Untreated OCD Progress Over Time?

As a leading provider of OCD treatment in Orange County, we often hear people ask whether OCD gets worse if it is left alone. While some mental health struggles may fluctuate with stress, OCD tends to follow a chronic course. Without professional intervention, the brain stays stuck in a feedback loop that reinforces the disorder. Only about 4% of people with OCD experience spontaneous remission, meaning the vast majority of people will continue to struggle unless they receive targeted treatment.

In the early stages, an obsession might only pop up during high-stress moments. However, when the brain learns that a compulsion provides temporary relief, it begins to use that “shortcut” more often. Over time, thoughts that appeared once a week may begin to surface dozens of times a day, eventually consuming hours of your waking life.

How Compulsions Become More Rigid

Compulsions have a way of “evolving.” What started as a simple check of the front door can turn into a complex, ten-minute ritual that must be performed perfectly. If you are interrupted or if the ritual doesn’t feel “just right,” the OCD demands you start over from the beginning. This rigidity makes it harder to maintain a normal schedule or leave the house on time.

As the disorder progresses, many people begin to avoid “triggers” entirely to stop the thoughts from happening. If you fear contamination, you might stop visiting friends. If you have “harm” obsessions while driving, you might stop using your car. This shrinks your world until your life is dictated by what you are trying to avoid.

What Are the Mental Health Effects of Untreated OCD?

The mental toll of living with a constant “brain itch” is exhausting. Because OCD is so draining, it frequently invites other mental health challenges. Statistics show that comorbid depression is incredibly frequent, with estimates ranging between 40% and 60% in people with OCD. When you feel like you are a prisoner to your own thoughts, it is natural for feelings of hopelessness to set in.

Other anxiety disorders, such as Generalized Anxiety Disorder or social phobia, also commonly co-occur. Most alarmingly, untreated OCD carries a significant risk regarding suicidality.

Studies indicate that lifetime suicidal ideation affects about 44% of those with the disorder. Furthermore, individuals with OCD have nearly double the risk of death by suicide compared to matched controls. This is why treating OCD is not just about “feeling better,” it is about long-term safety and health.

How Does Untreated OCD Affect Physical Health?

OCD is often categorized as a “head” problem, but the body keeps the score. When your brain is constantly sending out “danger” signals, your physical health pays the price.

How Chronic Stress Affects the Nervous System

Living with untreated OCD means your nervous system is in a state of perpetual high alert. This constant “fight or flight” mode floods your body with cortisol. Over time, this can lead to a weakened immune system, digestive issues, and cardiovascular strain.

How Sleep Disorders Emerge

Many people with OCD find that their symptoms peak at night when there are fewer distractions. Compulsive checking of locks or mental “reviewing” of the day can keep a person awake for hours. Chronic sleep deprivation further weakens the brain’s ability to resist intrusive thoughts, making the OCD symptoms even more severe the following morning.

How Compulsive Behaviors Cause Injury

Certain types of OCD lead directly to physical harm. Those with contamination fears may wash their hands until the skin is cracked and bleeding, leading to chronic dermatitis or infections. Others may have “symmetry” compulsions that involve repetitive physical movements, which can cause joint pain or repetitive strain injuries over several years.

How Does Untreated OCD Impact Relationships?

Social connections and networking are often key to both personal and professional success, the isolation of OCD can be devastating. Relationships often suffer because of something called “family accommodation.” This happens when loved ones start doing the compulsions for you, like checking the stove so you don’t have to, just to keep the peace.

While this comes from a place of love, it actually reinforces the OCD and creates deep resentment on both sides. Untreated OCD is linked to lower marriage rates and higher levels of conflict within the home. When a partner or parent is “unavailable” because they are trapped in a three-hour ritual, the emotional bond begins to fray.

What Are the Effects of Untreated OCD on Work and School?

The World Health Organization ranks OCD among the top 10 most disabling causes of illness worldwide. This impact is felt most clearly in our careers and education.

How OCD Reduces Concentration

It is nearly impossible to focus on a lecture or a business meeting when your brain is screaming that you left the iron on or that you just “sinned” by having a bad thought. The “mental noise” of OCD acts like a radio at full volume, making it hard to process new information.

How Absenteeism Increases

Between the time spent on morning rituals and the exhaustion from lack of sleep, many people with OCD struggle to show up. This leads to increased sick days or being consistently late, which can eventually result in job loss or academic probation.

How Career Progression Declines

Because of the functional impairment, many individuals with untreated OCD find themselves “underemployed.” They may choose jobs that are far below their skill level simply because those roles feel “safer” or have less potential to trigger their obsessions.

What Are the Long-Term Risks of Leaving OCD Untreated?

The longer OCD goes untreated, the more “chronic” it becomes. Long-term follow-ups show that after 10 to 12 years without proper treatment, only about 20% of adults achieve full remission. Nearly half of those who leave the condition alone will still have clinically significant symptoms a decade later.

Furthermore, a “Duration of Untreated Illness” (DUI) is a major factor in how well you respond to help later. The longer the brain stays in these loops, the more the neural pathways become ingrained. This can lead to increased treatment resistance, meaning that when the person finally does seek help, it may take longer and require more intensive work to see results.

When Should OCD Be Treated?

The best time to seek treatment is as soon as you realize your thoughts are interfering with your happiness or your ability to function. Early intervention significantly improves the prognosis and prevents the “shrinking world” effect.

Evidence-based treatments like Exposure and Response Prevention (ERP) and certain medications (SSRIs) have very high success rates. Unlike traditional talk therapy, which can sometimes make OCD worse by analyzing the “content” of the thoughts, ERP teaches you how to change your relationship with the thoughts. With professional help, recovery is possible, and the rates of improvement are significantly higher than the low 4% rate of “getting better on your own.”

Why Do People Leave OCD Untreated?

If the consequences are so severe, why do people wait so long? In many cases, it is due to the “shame” of the thoughts. Many people experience “taboo” obsessions regarding violence or religion and fear that telling a therapist will get them in trouble. Others may simply “normalize” their symptoms, thinking they are just “high-strung.”

In California, while we have great access to healthcare, finding a specialist who actually understands the nuances of ERP can be a challenge. Lack of access to specialized care often leads people to seek general therapy that doesn’t target the root of the OCD, leading to frustration and the belief that they “can’t be fixed.”

The Bottom Line

OCD is a heavy burden to carry, but you don’t have to carry it forever. Leaving it untreated allows the disorder to grow, but seeking help allows you to shrink the disorder instead. If you recognize yourself in these descriptions, remember that the “mental loop” is a medical condition, not a character flaw. Reaching out for evidence-based treatment is the most important step you can take toward a life that is defined by your values rather than your fears.

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