Mental illness cannot directly show up on an MRI but the MRI can however reveal patterns of structural and even functional differences that are linked to various types of psychiatric conditions.
Mental illnesses diagnoses still rely on clinical evaluations, but research does show group level or subtle brain alterations on an MRI for mental health conditions like schizophrenia, bipolar disorder, major depression and even Obsessive Compulsive Disorder (OCD).
For Obsessive Compulsive Disorder or OCD and MRI can show structural differences and hyperactivity in your orbitofrontal cortex and basal ganglia.
In Major Depression, an MRI can show reduced prefrontal cortex volume and altered white matter integrity.
For bipolar disorder, an MRI can show changes in cortical thickness and gray matter, along with altered blood flow or activity through functional MRI in mood regulating areas like amygdala.
And in schizophrenia, an MRI can show a reduction in gray matter volume, thinning in the prefrontal and temporal lobes and enlarged ventricles.
MRI scans are used by doctors when someone has a mental illness to primarily rules out physical or neurological causes that mimic psychiatric symptoms, which include brain tumors, traumatic brain injury, multiple sclerosis and neurodegenerative dementias such as Alzheimer's disease.
Common types of mental disorders include anxiety disorders, depression, bipolar disorder, and post-traumatic stress disorder.
Mental conditions affect how a person thinks, feels, and acts, often making daily life very hard.
Below are the most common categories of mental disorders:
Anxiety Disorders:
Generalized Anxiety Disorder (GAD): Constant and extreme worry about everyday life.
Panic Disorder: Sudden and very intense fear that causes physical panic attacks.
Specific Phobias: An irrational, deep fear of a specific object, animal, or situation (like heights).
Mood Disorders:
Depression: A long-lasting low mood, deep sadness, and a loss of joy in normal activities.
Bipolar Disorder: Extreme emotional highs (mania) and lows (depression) that cycle over time.
Trauma- and Stress-Related Disorders:
Post-Traumatic Stress Disorder (PTSD): Lasting distress and frightening memories after living through a terrible event.
Obsessive-Compulsive Disorder (OCD):
OCD: Unwanted, repeating thoughts (obsessions) paired with urges to do certain physical routines over and over (compulsions).
Eating Disorders:
Anorexia and Bulimia: Unhealthy patterns of eating and extreme worry about body weight or shape.
Personality Disorders:
Borderline Personality Disorder (BPD): Deeply rigid patterns of thinking and relating to others, leading to fast, intense shifts in emotion.
Avoiding personality disorder is also another mental disorder:
Avoidant Personality Disorder (AVPD) is a mental health condition that is marked by a lifelong pattern of extreme social inhibition, deep feelings of inadequacy, and a high sensitivity to criticism or rejection.
Symptoms of avoidant personality disorder include:
People with AVPD desperately want close relationships, but fear stops them.
Common signs avoidant personality disorder include:
• Avoiding jobs or tasks that require working with others because of fear of criticism.
• Refusing to get close to people unless you are certain they like you.
• Holding back in intimate relationships out of fear of shame or ridicule.
• Constantly worrying about being criticized or rejected in social settings.
• Feeling socially inept, inferior, or unappealing to others.
Causes and Risk Factors of avoidant personality disorder include:
The exact cause of avoidant personality disorder is unknown, but a mix of factors plays a role:
• Genetics: Inherited traits like high sensitivity or behavioral inhibition.
• Environment: Childhood experiences like emotional neglect, parental rejection, or teasing.
Diagnosis and Treatment for avoidant personality disorder include:
Professionals diagnose AVPD in adults by looking at long-term behavioral patterns using criteria from the DSM-5.
Treatment helps manage the avoidant personality disorder:
• Psychotherapy: Talk therapy like Cognitive Behavioral Therapy (CBT) helps change negative thoughts and build social skills.
• Medication: Doctors sometimes use antidepressants to treat co-existing anxiety or depression.