Psychopathology Cheat Sheet

Psychopathology studies psychological disorders, their biological bases, and prevalence. It explores the shift towards biological explanations and the complex interplay of genetics, environment, and brain function in disorders like schizophrenia, anxiety, PTSD, and OCD.

Core Principles

Psychopathology examines mental disorders and their biological underpinnings.
Mental disorders are globally prevalent, causing significant emotional and economic burdens.
Diagnosis relies on behavioral symptoms (DSM-5-TR), not direct biological tests.
Schizophrenia involves genetic vulnerability, environmental stress, and abnormal brain development.
Anxiety disorders, PTSD, and OCD share common themes of extreme fear, worry, or repetitive behaviors.
All studied disorders involve brain circuit imbalance, genetics, and environmental factors.

Action Steps

Understand the definition and scope of psychopathology.
Recognize the prevalence and impact of mental disorders.
Differentiate between positive and negative symptoms of schizophrenia.
Identify key genetic and environmental risk factors for mental illness.
Learn about the biological basis and structural changes in the brain associated with disorders.
Explore treatment options, including therapy and medication.

Key Terms

Psychopathology: The study of psychological disorders and their biological bases.
Transorbital Lobotomy: An outdated and harmful psychosurgical procedure involving ice-pick method through the eye socket.
DSM-5-TR: Diagnostic and Statistical Manual of Mental Disorders, 5th Edition, Text Revision; used for diagnosis based on symptoms.
Schizophrenia: A severe, chronic disorder affecting ~1% of the population, characterized by hallucinations, delusions, disorganized thinking, and cognitive impairment.
Positive Symptoms (Schizophrenia): Added behaviors like hallucinations, delusions, psychosis, and disorganized speech.
Negative Symptoms (Schizophrenia): Loss of function such as flat emotion, lack of motivation, and reduced speech.
Polygenic: Influenced by many genes, each with a small effect.
Epigenetics: Environmental effects that can influence gene expression.
Anxiety Disorders: Disorders involving extreme fear, worry, or repetitive thoughts/behaviors that interfere with daily life.
Phobic Disorders: Intense, irrational fear of a specific object or situation leading to avoidance.
Panic Disorder: Characterized by recurrent, sudden episodes of intense fear and physical symptoms.
Generalized Anxiety Disorder (GAD): Chronic, excessive worry not tied to a specific trigger.
Benzodiazepines: Anxiolytic medications that enhance GABA, increasing neuron inhibition for a calming effect; fast-acting but carry addiction risk.
PTSD: Posttraumatic Stress Disorder, caused by exposure to extreme trauma, leading to flashbacks, intrusive memories, and hypervigilance.
OCD: Obsessive-Compulsive Disorder, characterized by obsessions (thoughts) and compulsions (behaviors).
Tourette's Syndrome: A related disorder characterized by motor and vocal tics.

Real World Examples

Howard Dully's case: Illustrates historical misuse of psychiatric treatment (transorbital lobotomy) and the lack of understanding of mental illness at the time.
Syphilis causing paralytic dementia: Demonstrated that mental illness could have biological roots, shifting psychiatry towards biological explanations.
Twin studies in schizophrenia: Showed higher concordance rates in identical twins (~50%) compared to fraternal twins (~17%), indicating a significant genetic influence.
Urban environments and schizophrenia risk: Higher risk of schizophrenia is observed in urban environments, suggesting environmental factors play a role.
Exposure therapy for PTSD: Gradual exposure to trauma cues helps reduce fear response by decreasing fear circuitry overactivity.
CBT for OCD: Exposure and Response Prevention (ERP) is highly effective by exposing individuals to triggers and preventing ritualistic behaviors.

Timeline

Early Beliefs: Mental illness viewed as 'bad character'.
Discovery of Syphilis Link: Showed mental illness can have biological roots, prompting a shift toward biological psychiatry.
Modern View: Psychiatric disorders seen as involving brain dysfunction and environment interaction.
Adolescence/Early Adulthood: Common period for the onset of many mental disorders, often during stressful life transitions.
Controlled Trials: MDMA-assisted therapy is being explored experimentally for PTSD treatment.

People

Walter Freeman: Psychiatrist who performed transorbital lobotomies, including on Howard Dully.