Imagine you have no control over your thoughts and feel helpless until you do a specific action or ritual. This is the situation people with obsessive-compulsive disorder (OCD) experience daily. It is a common mental illness that involves obsessions and compulsions. Individuals with this disorder experience unreasonable and excessive thoughts and behaviours. Most people with OCD are aware that their obsessions are unrealistic, but are unable to break free from them.
According to a population-based survey, the lifetime prevalence of OCD is estimated to be 1-3%. Although the disorder can affect people of all ages, the risk is higher from childhood to early adulthood. It is significant to understand the biology of OCD so you can get appropriate treatment on time.
The Biology of OCD
Obsessive-compulsive disorder is a complex mental issue that comprises multiple causes, which are as follows:
Obsessions
OCD obsessions are lasting and unwanted thoughts that keep coming back. It can also include urges or images that are intrusive and cause distress and anxiety. You might try to ignore them, but obsessions are usually overlooked when you’re trying to think of or do other things.
For example, you think you forgot to lock the door or window or turn the stove off. Likewise, you feel fear that you can get any severe infection or any chronic illness.
Symptoms of obsession include:
- Fear of being infected when touching objects others have touched.
- Doubting about things like you locked the door or turned off the stove.
- Acute stress when objects aren’t organized or are facing a certain way.
- Thoughts about shouting rudely or not acting the proper way in public places.
- Unpleasant sensual images in the mind.
- Avoid situations that can cause you obsessions, such as shaking hands with others.
Compulsions
OCD individuals consider compulsive behaviours to get rid of their anxiety. However, they only feel relief for a limited period. As soon as they stop that compulsive behaviour, they again start taking stress. For example, the most common compulsive behaviours include repeatedly washing hands due to fear of contamination and arranging certain things for accurate organization.
Symptoms of compulsion include:
- Washing hands until your skin becomes raw in fear of contamination.
- Checking doors and windows again and again to ensure they are locked.
- Silently repeating certain words or phrases.
- Keep checking the stove after every minute to ensure it is off.
- Trying to replace a negative thought with a positive thought.
- Counting in specific patterns.
- Rearranging your goods.
Changes in brain structure
Individuals with OCD exhibit significant changes in the structure and function of different brain regions as compared to non-affected individuals.
Research has shown that brain areas associated with OCD symptoms are those in the cortico-striato-thalamo-cortical (CSTC) loop. These brain parts include:
Orbitofrontal cortex
This part of the brain involves decision-making and the evaluation of risks. In people with OCD, the cortex is often hyperactive, which may lead to intrusive and anxiety-provoking thoughts, a symptom of the disorder (obsessions).
Anterior cingulate cortex
This part significantly detects errors and emotional regulation. Overactivity in this area leads to increased anxiety and the need for perfectionism, a common symptom in people with OCD.
Striatum and thalamus
These brain structures play a role in habit formation and movement regulation. The striatum might be immense in people with OCD. These two areas are different compared with those of people without OCD.
Although people with OCD show these brain differences, mental health professionals don’t use neuroimaging to diagnose OCD. Generally, they will diagnose the condition through various behavioural and psychological symptoms.
PANDAS
PANDAS is a pediatric Autoimmune Neuropsychiatric disorder associated with the streptococcus bacteria infection. This disorder mainly occurs in children as the immune system is activated when the infection starts, and specific antibodies are generated. Then, antibodies react with the symptoms of OCD, which begin to appear.
Imbalance of Neurotransmitters
Neurotransmitters are the specialized messenger molecules that regulate different brain areas’ activity. Dopamine, serotonin, and epinephrine are the significant neurotransmitters whose regulated levels improve brain function and activity. However, if there is an imbalance in the level of any neurotransmitter, then it can result in the onset of mental health issues. However, serotonin is mostly considered when considering the chemical imbalance.
Serotonin is specifically involved in transmitting messages between nerve cells and controlling brain activity, including memory and learning. Medications, including selective serotonin reuptake inhibitors, are recommended by experts to deal with OCD symptoms. However, there is no evidence that the onset of OCD symptoms is only due to the dysregulation of serotonin. Likewise, other than serotonin, glutamate, dopamine, epinephrine, and GABA are involved in OCD progression.
Genetics of OCD
OCD is also considered a genetic disorder as it can run in families due to the transfer of genes. Those individuals whose parents have the genes of OCD are more likely to suffer from OCD than others. In addition, if any family member has OCD genes, then there is a greater chance that another family member will also have OCD.
Environmental factors
The environment of the individual also has a substantial impact on the development and expression of OCD. Stress does not directly develop OCD, but traumatic events in life can trigger the symptoms of OCD in individuals. For example, the loss of a loved one, financial loss, childhood abuse, or sexual abuse can generate intrusive thoughts in the mind. Moreover, prolonged stress can also elevate the severity of OCD symptoms. Some other environmental stress factors include exposure to environmental toxins and brain injury.
Brain lock
Brain lock is a condition in which four specific regions of the brain exhibit hyperactivity and repeatedly develop intrusive or unwanted thoughts. In other words, brain lock is just like the locking of the four brain regions due to OCD.
Treatment of OCD
OCD treatment is based on the severity of symptoms. Experts recommend medications to alter the brain chemistry passively. However, psychotherapy plays a role in providing practical guidance to individuals in consciously altering brain chemistry. Individuals learn different coping strategies and avoid responding to obsessive thoughts.
Cognitive behavioural therapy (CBT) is the most effective type of psychotherapy. It works very well for many people with OCD. CBT therapy also involves exposure and response prevention (ERP). In this therapy, your psychiatrist exposes you over time to a feared object or obsession, such as dirt. They teach this way not to do your compulsive rituals. You may enjoy a better quality of life once you learn to tackle your obsessions and compulsions.
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Renewed Mental Health Group is a reliable professional mental health platform that offers the finest mental health services for mental health issues such as anxiety, depression, ADHD, obsessive-compulsive disorder, etc. Our experts first thoroughly evaluate the mental condition and then provide the treatment. If you are dealing with OCD, then you are in the best place. Communicate with our experts and find the best treatment options today.