Mental Illness

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Mental Illness

 

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Schizophrenia Spectrum and Other Psychotic Disorders

Characterized by severe distortions in thought, perception, and emotion
  • Schizophrenia: A chronic mental disorder characterized by distortions in thinking, perception, emotions, language, sense of self, and behavior, including hallucinations and delusions
  • Schizoaffective Disorder: A disorder characterized by a major mood episode (depressive or manic) concurrent with symptoms of schizophrenia
  • Delusional Disorder: A disorder characterized by the presence of one or more delusions lasting at least one month without other psychotic symptoms
  • Brief Psychotic Disorder: A disorder characterized by sudden onset of psychotic symptoms lasting at least one day but less than one month
  • Catatonia: A syndrome characterized by marked psychomotor disturbances, including immobility, excessive motor activity, extreme negativism, or peculiar movements
 
 
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Bipolar and Related Disorders

Involve unusual shifts in mood, energy, and activity levels, typically cycling between periods of mania and depression.
  • Bipolar I Disorder: A disorder characterized by at least one manic episode, which may be preceded or followed by hypomanic or major depressive episodes
  • Bipolar II Disorder: A disorder characterized by at least one hypomanic episode and at least one major depressive episode, without full manic episodes
  • Cyclothymic Disorder: A disorder characterized by chronic fluctuating mood disturbance with numerous periods of hypomanic and depressive symptoms lasting at least two years
 
 
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Depressive Disorders

Marked by persistent sadness, loss of interest or pleasure, and significant functional impairment.
  • Major Depressive Disorder (MDD): A disorder characterized by one or more major depressive episodes with depressed mood, loss of interest or pleasure, and other symptoms
 
 
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Anxiety Disorders

Feature excessive fear, worry, and avoidance behavior that is often disproportionate to the actual threat.
  • Separation Anxiety Disorder: Excessive anxiety concerning separation from home or attachment figures beyond what is expected for developmental level
  • Selective Mutism: Consistent failure to speak in specific social situations despite speaking in other situations
  • Specific Phobia: Marked fear or anxiety about a specific object or situation that is out of proportion to the actual danger posed
  • Panic Disorder: Recurrent unexpected panic attacks followed by persistent concern about additional attacks or maladaptive behavioral changes
  • Agoraphobia: Marked fear or anxiety about situations where escape might be difficult or help unavailable in the event of panic symptoms
 
 
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Obsessive-Compulsive and Related Disorders

Characterized by preoccupations and/or repetitive behaviors or mental acts (compulsions) aimed at reducing distress.
  • Obsessive-Compulsive Disorder (OCD): A disorder characterized by the presence of obsessions (recurrent intrusive thoughts) and/or compulsions (repetitive behaviors or mental acts)
  • Body Dysmorphic Disorder: Preoccupation with one or more perceived defects or flaws in physical appearance that are not observable or appear slight to others
  • Hoarding Disorder: Persistent difficulty discarding or parting with possessions, regardless of their actual value, leading to accumulation that clutters living areas
 
 
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Trauma and Stressor-Related Disorders

Conditions arising from exposure to a stressful or traumatic event (e.g., PTSD).
  • Reactive Attachment Disorder: A pattern of inhibited, emotionally withdrawn behavior toward adult caregivers due to insufficient care in early childhood
  • Posttraumatic Stress Disorder (PTSD): A disorder that develops after exposure to traumatic events, characterized by intrusion symptoms, avoidance, negative alterations in cognition and mood, and alterations in arousal
  • Acute Stress Disorder: A disorder similar to PTSD but occurring within three days to one month following trauma exposure
  • Adjustment Disorder: The development of emotional or behavioral symptoms in response to an identifiable stressor occurring within three months of onset
 
 
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Dissociative Disorders

Disruptions in the normal integration of consciousness, memory, identity, emotion, and perception.
  • Dissociative Amnesia: An inability to recall important autobiographical information, usually of a traumatic or stressful nature, inconsistent with ordinary forgetting
  • Depersonalization/Derealization Disorder: Persistent or recurrent experiences of feeling detached from one's mental processes or body (depersonalization) or experiences of unreality of surroundings (derealization)
 
 
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Somatic Symptom and Related Disorders

Disruptions in the normal integration of consciousness, memory, identity, emotion, and perception.
  • Somatic Symptom Disorder: One or more somatic symptoms that are distressing or result in significant disruption of daily life, with excessive thoughts, feelings, or behaviors related to the symptoms
  • Illness Anxiety Disorder: Preoccupation with having or acquiring a serious illness despite absence or minimal somatic symptoms
  • Conversion Disorder: One or more symptoms of altered voluntary motor or sensory function incompatible with recognized neurological or medical conditions
  • Factitious Disorder: Falsification of physical or psychological signs or symptoms, or induction of injury or disease, associated with identified deception
 
 
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Feeding and Eating Disorders

Persistent disturbance of eating or eating-related behavior resulting in altered consumption or absorption of food (e.g., anorexia, bulimia).
  • Pica: Persistent eating of non-nutritive, non-food substances over a period of at least one month
  • Rumination Disorder: Repeated regurgitation of food for at least one month, which may be rechewed, reswallowed, or spit out
  • Anorexia Nervosa: Restriction of energy intake leading to significantly low body weight, intense fear of gaining weight, and disturbance in the way body weight or shape is experienced
  • Bulimia Nervosa: Recurrent episodes of binge eating followed by inappropriate compensatory behaviors to prevent weight gain
  • Binge-Eating Disorder: Recurrent episodes of binge eating without the regular use of inappropriate compensatory behaviors characteristic of bulimia nervosa
 
 
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Substance-Related and Addictive Disorders

Problems associated with the excessive use and dependence on drugs, alcohol, or behaviors like gambling.
  • Alcohol Use Disorder: A problematic pattern of alcohol use leading to clinically significant impairment or distress
  • Cannabis Use Disorder: A problematic pattern of cannabis use leading to clinically significant impairment or distress
  • Opioid Use Disorder: A problematic pattern of opioid use leading to clinically significant impairment or distress
  • Stimulant Use Disorder: A problematic pattern of stimulant use leading to clinically significant impairment or distress
  • Tobacco Use Disorder: A problematic pattern of tobacco use leading to clinically significant impairment or distress
  • Gambling Disorder: Persistent and recurrent problematic gambling behavior leading to clinically significant impairment or distress
  • Internet Gaming Disorder: Persistent and recurrent use of the Internet to engage in games, leading to clinically significant impairment or distress (condition for further study)