Schizoid Personality Disorder

A condition in which people avoid social activities and interacting with others.
Schizoid personality disorder typically begins in early adulthood.
People with this condition don’t desire or enjoy close relationships, even with family, and are often seen as loners. They may be emotionally cold and detached.
Therapy and medications, such as antidepressants or mood stabilizers, can help.


Cluster Number:
Wiki Number: PW194
Diagnosis: Schizoid Personality Disorder
US Patients: 1-4% (unclear if that is of the general or psychiatric patient %), poorly studied, because few with the problem seek treatment.
World Patients:
Sex Ratio: M+;F
Age Onset:
Brain Area:
Symptoms: uninterested in social relationships, detachment, apathy; a rich internal fantasy world. Feels like an “observer” in life, asexual.
Progression: The are commonly bullied; often consider suicide but few attempt it. Little self-disclosure or social intimacy. Creative thinkers.
Causes: Is preoccupied with inner experience; does not desire “limiting” social relationships. perfectionistic, 50% heritable.
Medications: antipsychotics to alleviate social defects and blunted affect, part of the schizophrenic spectrum; bupriopion
Therapies: Helping them learn about their emotions-if they want to to develop commonalities and feel and be more “connected” with others

Youtube Video: What is Schizoid Personality Disorder

Amazon or Library Book: Wounded Personalities

Support Group:

(Schizophrenia Action Alliance)


The world-wide medical research
reports chosen for each diagnosis 

Clicking each title opens the
PubMed article’s summary-abstract.

  • Predictors of personality disorders in prisoners
    by Fayegh Yousefi on June 1, 2022

    Personality disorders can lead to difficult social or occupational functional processes rooted in chronic maladaptive thoughts, feelings, and behaviors. This study aimed to investigate factors of personality disorder in prisoners from the central prison of Sanandaj, Iran. We conducted a cross-sectional study, which included all prisoners in the central prison of Sanandaj, Iran. The study sample includes 343 prisoners, of which 329 were male, and 14 were female, selected by randomized multistage...

  • Personality Traits, Dimensions, and Suicidal Behavior in Posttraumatic Stress Disorder: Results From a Cross-Sectional Study in a Mexican Hospital
    by José C Medina on March 11, 2022

    Introduction Posttraumatic stress disorder (PTSD) may develop after exposure to stressful or life-threatening events and is linked to suicidal behavior. Personality is hypothesized to be a mediator of this risk though assessing factors influencing such findings has been difficult due to the psychiatric comorbidities of the disorder. Objective The aim of the study was to examine the relationship between personality and suicidal behavior in people with PTSD. Method This was a cross-sectional study...

  • Are personality disorders in bipolar patients more frequent in the US than Europe?
    by Robert M Post on March 1, 2022

    CONCLUSIONS: Although limited by use of self report and other potentially confounding factors, multiple PDs were more prevalent in the US than in Europe, but these preliminary findings need to be confirmed using other methodologies. Other poor prognosis factors are prevalent in the US, including early age of onset, more childhood adversity, anxiety and substance abuse comorbidity, and more episodes and rapid cycling. The interactions among these variables in relationship to the more adverse...

  • Low-Density Lipoprotein Cholesterol Is a Possible Blood Biomarker of Schizoid Personality Traits among Females
    by Kohei Hayakawa on February 25, 2022

    Lower serum levels of low-density lipoprotein cholesterol (LDL-C) have been suggested to indicate higher suicide risk and various psychiatric symptoms. Previously, we reported that lower serum LDL-C levels are associated with loneliness, social phobia, isolated life with little social support, and lower trust in others among young non-clinical females. Thus, we hypothesize that schizoid personality traits may be associated with lower serum LDL-C. We here verified this hypothesis using...