schizophrenia

Nail Biting Behavior as a Disorder

Behavior Description: The individual compulsively bites her nails until they are raw and bleeding.
- Physical Consequences: Requires constant bandaging of her fingers.
- Behavioral Adaptation: Wears gloves at all times to hide the damage and prevent further injury.

Four Criteria of Disorders:
- Maladaptive: Yes, behavior is maladaptive because it is physically harming herself.
- Unjustifiable: Yes, there is no valid reason for engaging in this behavior.
- Disturbing: Yes, the individual feels embarrassed and upset about the habit, indicating distress.
- Atypical: Yes, the behavior is atypical compared to societal norms of nail care and self-harm.

Types of Disorders Treated with Exposure Therapies:
- Phobias: Commonly treated using exposure therapy to reduce anxiety towards specific fears.
- OCD: Exposure therapy is used to help individuals resist compulsions. This differs from standard exposure therapy as it focuses on preventing compulsive behavior, rather than facing fears.

Neurotransmitters:
- Serotonin: May be lacking in individuals suffering from depression.
- Norepinephrine: Potentially imbalanced or reduced.
Physical Brain Aspects:
- Gray Matter: May be reduced in individuals with bipolar disorder, affecting overall emotional regulation.
- Amygdala and Frontal Lobes: Low activity in these areas has been correlated with anxiety and depression.

Neurotransmitter Characteristics:
- Serotonin Levels: Typically low, which contributes to mood dysregulation.
- Norepinephrine Levels: Often too high, leading to heightened anxiety responses.
Affected Brain Areas:
- Amygdala: Is crucial in regulating fear and anxiety responses.

Types of Personality Disorders Discussed:
1. Paranoid Personality Disorder: Characterized by distrust and suspicion of others.
2. Obsessive-Compulsive Personality Disorder: Preoccupation with orderliness and control.
3. Borderline Personality Disorder: Instability in relationships, self-image, and emotions.
4. Schizoid Personality Disorder: Detachment from social relationships and a limited range of emotional expression.
5. Avoidant Personality Disorder: Hypersensitivity to negative evaluation and avoidance of social interaction.
6. Narcissistic Personality Disorder: Pattern of grandiosity, need for admiration, and lack of empathy.
7. Schizotypal Personality Disorder: Discomfort in close relationships, cognitive or perceptual distortions, and eccentric behavior.
8. Dependent Personality Disorder: Pervasive and excessive need to be taken care of, leading to submissive and clinging behaviors.
9. Antisocial Personality Disorder: Disregard for others' rights and lack of remorse for harmful actions.

Depression's Effects on Weight: Individuals often exhibit weight changes due to lower activity levels stemming from the disorder.
Brain Activity in Depression: Reduction in the activity of the frontal lobes correlates with symptoms of depression.

Reuptake Definition: The process where neurotransmitters released into the synaptic cleft are reabsorbed by the presynaptic neuron.
- Inhibition of Reuptake: Refers to preventing neurotransmitters from being reabsorbed, leading to increased levels in the synapse and prolonged effect on the postsynaptic neuron.

Active Transport: The sodium-potassium pump moves sodium ions out of the cell and potassium ions into the cell, requiring ATP to function effectively. This process sets up the resting membrane potential of approximately -70 mV.
- Action Potential Triggering: When a stimulus causes the neuron to reach the threshold of -55 mV, sodium channels open, allowing sodium to rush into the cell, temporarily making it more positive (depolarized).

Examples Cited: Various characters represented personality disorders based on their actions in social settings, helping to categorize each scenario under specific personality disorders as discussed in prior sections.
- Jada: Potentially avoidant due to anxiety in social scenarios.
- Peter: Displays traits of narcissistic personality disorder, shown by his confidence and self-importance in social interactions.
- Doreen: May represent an avoidant personality disorder due to her discomfort in social interactions.
- Harold: Displays characteristics of schizoid personality disorder, exhibiting a lack of interest in social relations and emotional responses.

Psychosis: Condition characterized by a disconnection from reality, marked by delusions and hallucinations.
- Positive Symptoms: Include the addition of abnormal behaviors such as delusions and hallucinations.
- Negative Symptoms: Refer to the absence or reduction of normal functions such as affective flattening and loss of motivation.
Delusions:
- Delusions of Grandeur: Beliefs of having extraordinary powers or achievements.
- Delusions of Persecution: Beliefs that one is being targeted or harassed by others.
Hallucinations: Auditory hallucinations are the most common form, where one hears voices or sounds that are not present.

Dopamine Hypothesis: Suggests an excess of dopamine receptors in individuals with schizophrenia, leading to symptoms like hallucinations and delusions.
Impact of Prenatal Factors: Exposure to viral infections during pregnancy is linked to increased risks for developing schizophrenia in offspring, particularly if the infection occurs during critical developmental periods.

Medication: Antipsychotic drugs are often prescribed to balance neurotransmitter levels, primarily dopamine.
Therapeutic Support: Social support and therapy are critical in managing symptoms and improving quality of life.

Understanding the complexities of psychological disorders is essential for effective treatment and reducing stigma surrounding mental health.