Obsessive-Compulsive Disorder (OCD) is characterized by recurrent, intrusive thoughts (obsessions) that occur against the person’s will, and repetitive behaviors (compulsions) performed to reduce the anxiety caused by these thoughts.
Additionally:
• Obsessions and/or compulsions are time-consuming (e.g., take more than one hour per day) or cause clinically significant distress.
• They lead to impairment in occupational, social, or personal functioning.
• The symptoms are not attributable to the effects of a substance or another medical condition.
• They cannot be better explained by another mental disorder.
Obsessions are persistent, repetitive, intrusive, and distressing thoughts, urges, or images that create anxiety. Typical obsessions include fears of contamination by germs or dirt, poisoning, harming oneself or others, and thoughts about engaging in unwanted behaviors. These obsessive thoughts often conflict with the individual’s value system and beliefs. For example, a mother who deeply loves her child may fear harming them; a very religious person may fear blaspheming against God.
Compulsions, on the other hand, are repetitive behaviors or mental acts performed to reduce the anxiety caused by these disturbing thoughts or to prevent feared outcomes. This process can also be described as “neutralizing” thoughts or behaviors. Compulsions, also called “rituals,” may appear as observable behaviors (such as repeatedly checking the door) or covert mental rituals (such as silently praying). Typical compulsions include excessive cleaning, hand washing, checking, seeking reassurance, hoarding, and arranging.
In Obsessive-Compulsive Disorder (OCD), the individual has obsessions and/or compulsions. Compulsions are often performed as a result of magical thinking, with the motivation of protecting oneself or loved ones from disasters such as death, illness, or misfortune.
For example, a person with the obsession “What if I got contaminated?” may engage in constant hand washing as a compulsion. Or someone with the obsession “What if I harm my loved ones?” may perform mental counting or repetitive praying. Compulsions provide short-term relief but maintain the OCD cycle.
Compared to compulsions, the number of obsessions is expected to be greater, as thoughts are far more diverse than behaviors.
OCD is one of the most common psychiatric disorders. Its prevalence in Turkey and worldwide is similar. It occurs in approximately 1–3% of the general population, with a lifetime prevalence of around 2–3%. In other words, 2–3 out of every 100 people may experience OCD at some point in their lives.
It typically begins in childhood or adolescence and may follow a chronic course. However, since symptoms are often mild at first, seeking help is delayed, meaning the actual prevalence may be higher. Most individuals seek help after their 20s. This delay is often due to early symptoms being interpreted as normal fluctuations of adolescence. However, early intervention is more effective. Onset after the age of 40 is rare. In such cases, it is important to rule out organic causes. OCD usually follows a pattern of exacerbations and remissions; stress can increase symptoms.
Obsessive-Compulsive Disorder (OCD) does not arise from a single cause. It develops through the interaction of biological, psychological, and environmental factors. From a biological perspective, irregularities in the serotonin system have been associated with OCD. Neuroimaging studies have shown that the anterior cingulate cortex, orbitofrontal cortex, and caudate nucleus play significant roles in this process. PET studies particularly highlight increased activity in the caudate nucleus. This region is associated with implicit learning and habits, which helps explain how compulsions become automatic over time.
Genetic factors are also influential. OCD is more common in the families of affected individuals. Additionally, childhood infections (especially beta-hemolytic streptococci), head trauma, birth complications, and early life trauma are among the risk factors.
Psychologically, the way individuals interpret their thoughts is important. In OCD, people assign excessive meaning to thoughts that enter their minds. Interpretations such as “If I thought this, I might do it” or “This thought means I am a bad person” cause these thoughts to be perceived as threats.
Learning mechanisms play an important role in this process. According to the Cognitive Behavioral approach, obsessions gradually become conditioned stimuli. A thought that was initially neutral becomes associated with anxiety and begins to produce anxiety with each recurrence. The individual performs a compulsion to reduce this anxiety and experiences relief. This relief leads to repetition of the behavior, maintaining the cycle.
For example, when a person thinks “Did I lock the door?” they check it and feel relieved. This teaches the brain: “If I check, my anxiety decreases.” Over time, the person continues to check repeatedly even when they know it is locked. The primary goal is not information but the feeling of relief. Avoidance behaviors function similarly. Avoiding anxiety-provoking situations provides short-term relief but maintains fear in the long term. Stressful life events can also trigger this process. Early onset, genetic vulnerability, trauma history, and accompanying personality traits may negatively affect the course of the disorder.
People with OCD often:
Feel intense guilt and shame due to their thoughts
Question themselves by asking “Why am I thinking like this?”
Try to hide their symptoms from others
This can delay recognition of the problem and seeking help.
OCD is often accompanied by other disorders. Between 28–38% of individuals meet the diagnostic criteria for major depressive disorder. It can also co-occur with anxiety disorders such as panic disorder.
Mowrer’s “Two-Factor Theory” plays an important role in explaining the development and maintenance of OCD. According to this theory:
• Fear is learned through classical conditioning
• This fear is reinforced and maintained through operant conditioning
In classical conditioning, a stimulus that was initially neutral (e.g., a thought) becomes associated with an anxiety-provoking situation and begins to create anxiety on its own.
For example:
Let’s consider a thought that is initially neutral for a person:
“What if my hands are dirty?”
One day, the person is actually in a dirty environment and experiences fear of getting sick.
This intense anxiety becomes associated with the thought “Are my hands dirty?”
Over time:
Even when the environment is not dirty, this thought alone → starts to create anxiety.
Thus, the thought itself becomes a “threat.”
In operant conditioning, the consequence of a behavior is decisive. When the person performs a compulsion, their anxiety decreases, which reinforces the behavior. This is called negative reinforcement.
For example:
When the person feels anxious, they wash their hands.
Before: Anxiety is high
After washing: Anxiety decreases
The brain learns:
“If I wash my hands, I feel better.”
This relief is negative reinforcement (reduction of anxiety strengthens the behavior).
Result:
The person begins to wash their hands more frequently and for longer durations whenever they feel anxious.
According to Mowrer, when a person escapes from or avoids anxiety-provoking stimuli, they feel relief in the short term, but this maintains fear in the long term.
For example:
The person stops using public transportation, avoids touching door handles, and does not shake hands.
Short-term: Feels relief
Long-term: The brain learns:
“These situations are truly dangerous; avoiding them is correct.”
This maintains OCD.
According to the behavioral model, thoughts that could occur to anyone become associated with anxiety through conditioning and turn into threats. The individual turns to avoidance and compulsions to reduce this anxiety.
The cycle works as follows:
Or in another example:
• Obsession: “Did I leave the stove on?”
• Anxiety: Fear that the house may burn down
• Compulsion: Checking the stove repeatedly
• Relief: “Okay, it’s off”
• Result: Doubt returns after 5 minutes
In summary, the cycle:
Obsession → Anxiety → Compulsion → Temporary relief → Obsession again
Although these strategies work in the short term, they create the cycle in the long term.
Unless this cycle is broken:
The brain learns that compulsions are the “solution”
Obsessions become more frequent and more intense
For Professional Support: To break the OCD cycle and to get detailed information about our psychological counseling services in Antalya, you can contact us.
For detailed information about the psychotherapy of OCD, you can review the relevant blog post.
At our office located in Muratpaşa, Antalya, we provide evidence-based therapy methods for children, adolescents, and adults. Do not let obsessions limit your life.
