PsychologyUnit 411 min read
Psychological Disorders: Types, Causes & Effects
Unit 4 of Psychology explores mental health conditions, their symptoms, causes, and impacts on daily life, using real-life examples and NEB-style questions to prepare students for exams.
TAKEAWAYS:
- Psychological disorders are patterns of thoughts, feelings, or behaviors that cause distress or impair functioning.
- They are classified into categories like anxiety, mood, and psychotic disorders based on symptoms.
- Biological, psychological, and social factors contribute to the development of disorders.
- Early identification and treatment improve outcomes for individuals with psychological disorders.
- Stigma and misconceptions often prevent people from seeking help for mental health issues.
- Understanding disorders helps in promoting mental health awareness and reducing discrimination.
What Are Psychological Disorders?
Psychological disorders are conditions characterized by abnormal thoughts, feelings, and behaviors that cause significant distress or impair a person’s ability to function in daily life. These disorders can affect anyone, regardless of age, gender, or background.
Key Features of Psychological Disorders
- Deviation from Normal Behavior: The behavior or thoughts are unusual compared to cultural norms.
- Distress: The person experiences significant emotional pain or suffering.
- Dysfunction: The disorder interferes with daily activities like work, relationships, or self-care.
- Duration: Symptoms persist over time and are not temporary reactions to stress.
Classification of Psychological Disorders
Psychological disorders are grouped into categories based on their symptoms and characteristics. The most widely used classification system is the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), published by the American Psychiatric Association.
Major Categories of Psychological Disorders
Anxiety Disorders
Anxiety disorders involve excessive fear or worry that interferes with daily life. People with anxiety disorders often experience physical symptoms like rapid heartbeat, sweating, or trembling.
Types of Anxiety Disorders
| Type | Description | Example Symptoms |
|---|---|---|
| Generalized Anxiety Disorder (GAD) | Excessive, uncontrollable worry about everyday things. | Restlessness, fatigue, muscle tension |
| Phobias | Irrational fear of specific objects or situations. | Fear of heights, spiders, or flying |
| Panic Disorder | Sudden episodes of intense fear with physical symptoms (panic attacks). | Chest pain, shortness of breath, dizziness |
Mood Disorders
Mood disorders involve extreme mood swings that affect a person’s ability to function. The two most common types are depression and bipolar disorder.
Depression
Depression is a persistent feeling of sadness and loss of interest in daily activities. It can lead to physical symptoms like fatigue, changes in appetite, and sleep disturbances.
Example Symptoms of Depression:
- Feeling sad or empty most of the time.
- Loss of interest in activities once enjoyed.
- Difficulty concentrating or making decisions.
- Thoughts of death or suicide.
Bipolar Disorder
Bipolar disorder is characterized by extreme mood swings between mania (elevated mood, high energy) and depression (low mood, fatigue).
| Phase | Symptoms |
|---|---|
| Manic Phase | Excessive energy, reduced need for sleep, impulsive behavior, grandiosity |
| Depressive Phase | Sadness, fatigue, loss of interest, feelings of worthlessness |
Psychotic Disorders
Psychotic disorders involve a loss of contact with reality. The most well-known psychotic disorder is schizophrenia.
Schizophrenia
Schizophrenia is a chronic disorder that affects how a person thinks, feels, and behaves. Symptoms include:
- Hallucinations: Seeing or hearing things that are not real (e.g., hearing voices).
- Delusions: False beliefs that are firmly held despite evidence to the contrary (e.g., believing someone is controlling your thoughts).
- Disorganized Thinking: Difficulty organizing thoughts or speaking clearly.
Personality Disorders
Personality disorders involve long-term, rigid patterns of thinking, behaving, and relating to others that cause significant problems in relationships and work.
Types of Personality Disorders
| Type | Description |
|---|---|
| Borderline Personality Disorder (BPD) | Intense fear of abandonment, unstable relationships, impulsive behavior. |
| Antisocial Personality Disorder (ASPD) | Disregard for others' rights, lack of empathy, manipulative behavior. |
| Narcissistic Personality Disorder (NPD) | Grandiosity, need for admiration, lack of empathy. |
Dissociative Disorders
Dissociative disorders involve disruptions in memory, identity, or consciousness. The most extreme form is dissociative identity disorder (DID), formerly known as multiple personality disorder.
Dissociative Identity Disorder (DID)
- A person has two or more distinct identities (or "alters") that take control at different times.
- Each identity may have its own name, personality, and memories.
- Often linked to severe trauma in childhood.
Eating Disorders
Eating disorders involve extreme disturbances in eating behavior, often driven by a desire to control weight or shape.
Types of Eating Disorders
| Type | Description |
|---|---|
| Anorexia Nervosa | Extreme weight loss, fear of gaining weight, distorted body image. |
| Bulimia Nervosa | Binge eating followed by purging (vomiting, laxatives, or excessive exercise). |
| Binge-Eating Disorder | Recurrent episodes of binge eating without purging. |
Causes of Psychological Disorders
Psychological disorders arise from a combination of biological, psychological, and social factors.
1. Biological Factors
- Genetics: Family history of mental illness increases risk.
- Brain Chemistry: Imbalances in neurotransmitters (e.g., serotonin, dopamine).
- Hormonal Imbalances: Thyroid disorders can affect mood.
2. Psychological Factors
- Trauma: Childhood abuse or neglect.
- Stressful Life Events: Loss of a loved one, divorce, job loss.
- Cognitive Patterns: Negative thought patterns (e.g., catastrophizing).
3. Social Factors
- Family Environment: Dysfunctional family dynamics.
- Cultural Influences: Stigma around mental health.
- Social Isolation: Lack of support networks.
Treatment of Psychological Disorders
Treatment often involves a combination of therapy, medication, and lifestyle changes.
1. Psychotherapy
- Cognitive Behavioral Therapy (CBT): Helps change negative thought patterns.
- Dialectical Behavior Therapy (DBT): Focuses on emotional regulation (used for BPD).
- Psychodynamic Therapy: Explores unconscious thoughts and past experiences.
2. Medication
- Antidepressants: Increase serotonin levels (e.g., SSRIs like fluoxetine).
- Antipsychotics: Used for schizophrenia and bipolar disorder.
- Anxiolytics: Reduce anxiety (e.g., benzodiazepines).
3. Lifestyle Changes
- Exercise: Reduces stress and improves mood.
- Healthy Diet: Balanced nutrition supports brain function.
- Sleep Hygiene: Poor sleep worsens mental health symptoms.
NEB-Style Questions and Answers
Short Answer Questions
Define psychological disorders. Answer: Psychological disorders are patterns of thoughts, feelings, or behaviors that cause significant distress or impair daily functioning.
List two symptoms of schizophrenia. Answer:
- Hallucinations (hearing voices).
- Delusions (false beliefs).
What is the difference between anxiety and depression? Answer:
Anxiety Depression Excessive fear or worry Persistent sadness Physical symptoms (e.g., sweating) Loss of interest in activities
Long Answer Questions
Explain the biological, psychological, and social causes of depression. Answer:
- Biological: Genetic predisposition, serotonin imbalances.
- Psychological: Negative thought patterns, past trauma.
- Social: Lack of support, stressful life events.
Describe the symptoms and treatment of bipolar disorder. Answer:
- Symptoms:
- Manic phase: High energy, impulsivity, reduced sleep.
- Depressive phase: Sadness, fatigue, loss of interest.
- Treatment:
- Medication (mood stabilizers like lithium).
- Therapy (CBT, family therapy).
- Lifestyle changes (regular sleep, exercise).
- Symptoms:
Exam Tip
- Focus on Definitions: Know the key features of each disorder (e.g., symptoms of schizophrenia vs. bipolar disorder).
- Compare and Contrast: Be ready to differentiate between similar disorders (e.g., anxiety vs. depression).
- Real-Life Examples: Use case studies or examples to explain disorders (e.g., "A person with OCD may wash hands excessively").
- Treatment Approaches: Understand that treatment often combines therapy and medication.
- NEB Trends: Expect questions on causes, symptoms, and classification of disorders. Practice short and long answer questions from past papers.
Visual Summary
Based on the NEB +2 Humanities syllabus for Psychology (Psy), unit 4.
Discussion
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