Questions & explanations
1. How does treatment differ for anorexia, bulimia, and binge eating disorder?
For anorexia, the first step is medical stabilization and weight restoration, often in a hospital if weight is very low. Family-based therapy is effective for adolescents, and cognitive-behavioral therapy (CBT) for adults. For bulimia, CBT specifically for bulimia (CBT-E) is the first-line treatment, along with antidepressant medication like fluoxetine. For binge eating disorder, CBT and interpersonal therapy are effective, and the medication lisdexamfetamine is approved. All treatments address unhealthy thoughts about food and body image. Nutritional counseling is also important. The key difference is the focus on weight restoration in anorexia versus stopping binge-purge cycles in bulimia and reducing binges in BED.
2. What kinds of therapy are used for dissociative disorders, and what is the goal?
The main therapy for dissociative disorders is psychotherapy, especially trauma-focused therapy. For dissociative identity disorder (DID), the goal is to help the person communicate between different identities, reduce amnesia, and eventually integrate the identities into one cohesive sense of self. For depersonalization/derealization disorder, therapy focuses on grounding techniques to help the person feel more connected to reality, such as focusing on physical sensations or describing the environment. Cognitive-behavioral therapy (CBT) can help manage distress. There are no FDA-approved medications specifically for dissociation, but antidepressants or anti-anxiety drugs may help with related symptoms.
3. What neurochemical systems are involved in anxiety disorders in children?
Anxiety disorders in children involve several neurochemical systems. The serotonin system helps regulate mood and anxiety; low serotonin activity is linked to increased anxiety. The norepinephrine system triggers the 'fight or flight' response; overactivity can cause excessive worry and physical symptoms like rapid heartbeat. The GABA (gamma-aminobutyric acid) system is the brain's main inhibitory (calming) neurotransmitter; reduced GABA activity can lead to heightened anxiety. Medications like SSRIs (selective serotonin reuptake inhibitors) increase serotonin levels, while benzodiazepines enhance GABA effects. Understanding these systems helps in choosing the right medication for anxious children.
4. How does brain development in adolescence affect mental health?
During adolescence, the brain undergoes major changes, especially in the prefrontal cortex (the part for decision-making and impulse control) and the limbic system (the part for emotions and rewards). The limbic system matures faster, making teens more sensitive to rewards and emotions. The prefrontal cortex develops more slowly, so teens may act impulsively or take risks. This imbalance can increase vulnerability to mental health issues like depression, anxiety, and addiction. For example, a teen might try drugs because the reward center says 'feel good' while the control center isn't fully online yet. Understanding this helps in designing treatments that support brain development.
5. How are somatic symptom disorder, illness anxiety disorder, and conversion disorder similar and different?
All three are somatic symptom and related disorders, where psychological distress appears as physical symptoms. In somatic symptom disorder, the person has real physical symptoms with excessive worry. In illness anxiety disorder, the person fears having a serious illness but has few or no symptoms. In conversion disorder, the person has neurological symptoms like paralysis or blindness without a medical cause. All cause distress and impairment. Treatment for each involves cognitive-behavioral therapy (CBT) to address thoughts and behaviors. Medications like antidepressants may help if mood issues are present. The key difference is the type of symptom and the focus of worry.
6. A person eats a very large amount of food in a short time and then forces themselves to vomit. This happens at least once a week for three months. What disorder is this, and what are the physical complications?
This is bulimia nervosa. Bulimia involves episodes of binge eating (eating an unusually large amount in a short time with a feeling of loss of control) followed by purging behaviors like vomiting, laxative use, or excessive exercise to prevent weight gain. Physical complications include tooth erosion from stomach acid, swollen salivary glands, dehydration, electrolyte imbalances that can cause heart arrhythmias, and gastrointestinal problems. Treatment includes cognitive-behavioral therapy (CBT) specifically for bulimia, which helps break the binge-purge cycle. Antidepressants, especially fluoxetine (Prozac), are FDA-approved for bulimia and can reduce binge-purge episodes.
7. What are the main treatment approaches for PTSD, and how do they work?
The main treatments for PTSD are trauma-focused psychotherapies and medications. Trauma-focused therapies include cognitive processing therapy (CPT), which helps change unhelpful beliefs about the trauma, and prolonged exposure (PE), where the person gradually faces trauma reminders in a safe way. Eye movement desensitization and reprocessing (EMDR) uses bilateral stimulation (like eye movements) while recalling the trauma to reduce distress. Medications like selective serotonin reuptake inhibitors (SSRIs), such as sertraline and paroxetine, are approved for PTSD and help reduce symptoms. These treatments aim to help the person process the trauma and regain control.
8. A soldier returns from war and has flashbacks of combat, avoids crowds, and feels emotionally numb. These problems have lasted for over a year. What is the diagnosis, and what brain changes are involved?
The diagnosis is post-traumatic stress disorder (PTSD). PTSD involves four symptom clusters: re-experiencing (flashbacks, nightmares), avoidance, negative changes in thoughts and mood, and hyperarousal (being easily startled, angry outbursts). Neurobiologically, PTSD is linked to an overactive amygdala (fear center), a smaller hippocampus (memory), and reduced activity in the prefrontal cortex (impulse control). These changes make it hard to regulate fear and memories. Treatment includes trauma-focused therapies like cognitive processing therapy (CPT) and eye movement desensitization and reprocessing (EMDR). Medications like SSRIs (e.g., sertraline) are also used.
9. How does the CFI help tell apart dementia from depression in an older adult from a different culture?
Dementia and depression can look similar in older adults, with symptoms like memory loss and apathy. The CFI asks about the patient's own explanation: if they say their mind is 'slowing down' due to old age, it might be depression; if they cannot describe changes, dementia is more likely. The CFI also explores how family perceives the problem—families may mistake depression for dementia in cultures where mental illness is taboo. The clinician can then use cognitive tests that are culturally fair. The CFI ensures that language barriers or cultural norms do not lead to wrong diagnosis. It also identifies whether the patient's symptoms are normal grief or a disorder.
10. How are OCD, body dysmorphic disorder, hoarding disorder, and trichotillomania similar in terms of symptoms and treatment?
These disorders are grouped as obsessive-compulsive and related disorders because they share features like repetitive behaviors, intrusive thoughts, and difficulty controlling impulses. In OCD, the focus is on obsessions and compulsions; in body dysmorphic disorder, on appearance; in hoarding, on saving items; and in trichotillomania, on hair pulling. All cause significant distress and impairment. Treatment often includes cognitive-behavioral therapy (CBT), especially exposure and response prevention (ERP) for OCD, and habit reversal for trichotillomania. Medications like selective serotonin reuptake inhibitors (SSRIs) are commonly used across these conditions.
11. Compare drug courts and prison-based treatment for people with addiction who have committed crimes.
Drug courts offer treatment as an alternative to prison, while prison-based treatment provides care inside correctional facilities. In drug courts, participants live in the community and attend treatment sessions. They are closely supervised by the judge and treatment team. Prison-based treatment happens in a controlled environment but may have limited resources. Drug courts often have better outcomes because people can practice recovery skills in real-world settings. Both aim to reduce drug use and criminal behavior, but drug courts keep people out of prison. Prison-based treatment can be effective if it continues after release through reentry programs.
12. What are the differences in medical complications between anorexia, bulimia, and binge eating disorder?
In anorexia, severe calorie restriction leads to low body weight, bone loss, heart problems, and electrolyte imbalances. In bulimia, frequent vomiting causes tooth decay, swollen glands, and electrolyte disturbances that can affect the heart. In binge eating disorder, the main complications are obesity-related, such as high blood pressure, diabetes, and heart disease, since binges often involve high-calorie foods. Unlike anorexia and bulimia, binge eating disorder does not involve purging, so electrolyte problems are less common. All three disorders can cause psychological distress and require treatment. Medical monitoring is important for each.