This cheat sheet gives students a clear overview of major DSM-5 disorder categories used in psychology and mental health diagnosis. It helps organize many disorders into broad groups based on patterns of symptoms, development, thinking, mood, behavior, and functioning. Students need this reference to compare categories without assuming that a label fully explains a person.
It is especially useful for exam review, class discussions, and understanding psychological assessment terminology.
The DSM-5 groups disorders using diagnostic criteria such as symptoms, duration, distress, impairment, and exclusion of other causes. Major categories include neurodevelopmental, psychotic, mood, anxiety, trauma-related, obsessive-compulsive, personality, substance-related, and neurocognitive disorders. A diagnosis usually requires that symptoms cause clinically significant distress or impairment in daily life.
The DSM-5 is a classification tool, not a complete explanation of causes, treatment, culture, or individual experience.
Key Facts
- The DSM-5 is the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, used to classify mental disorders with standardized criteria.
- A mental disorder generally involves a clinically significant disturbance in thoughts, emotions, behavior, or development that causes distress or impairment.
- Clinically significant impairment means symptoms interfere with important areas of life such as school, work, relationships, self-care, or safety.
- Neurodevelopmental disorders usually begin in childhood and include conditions involving attention, learning, communication, intellectual functioning, or social development.
- Schizophrenia spectrum and other psychotic disorders involve symptoms such as delusions, hallucinations, disorganized thinking, disorganized behavior, or reduced emotional expression.
- Depressive and bipolar disorders are mood disorders, but depressive disorders center on low mood while bipolar disorders include episodes of mania or hypomania.
- Anxiety disorders involve excessive fear, worry, or avoidance, while obsessive-compulsive and related disorders involve obsessions, compulsions, or repetitive body-focused behaviors.
- Differential diagnosis means comparing possible disorders and ruling out better explanations such as medical conditions, substances, grief, culture, or another mental disorder.
Vocabulary
- DSM-5
- The DSM-5 is a manual that lists mental disorder categories and diagnostic criteria used by clinicians and researchers.
- Diagnostic Criteria
- Diagnostic criteria are the required symptoms, duration, and conditions that must be met before a disorder can be diagnosed.
- Clinically Significant Distress
- Clinically significant distress means emotional pain or suffering is strong enough to matter in a clinical assessment.
- Impairment
- Impairment is a reduction in a person's ability to function in daily life, such as at school, work, home, or in relationships.
- Comorbidity
- Comorbidity means that a person meets criteria for more than one disorder at the same time.
- Differential Diagnosis
- Differential diagnosis is the process of deciding which diagnosis best fits by comparing symptoms and ruling out other causes.
Common Mistakes to Avoid
- Treating a DSM-5 label as a full description of a person is wrong because diagnosis classifies symptoms, not personality, identity, or life story.
- Assuming one symptom proves a disorder is wrong because DSM-5 diagnoses usually require a pattern of symptoms, a minimum duration, and impairment or distress.
- Confusing sadness with major depressive disorder is wrong because normal sadness may not meet criteria for duration, severity, symptom number, or functional impairment.
- Mixing up anxiety disorders and obsessive-compulsive disorders is wrong because anxiety disorders focus on fear and worry, while OCD involves obsessions and compulsions.
- Ignoring culture, medical causes, and substance use is wrong because these factors can change how symptoms appear or explain symptoms better than a mental disorder.
Practice Questions
- 1 A student has hallucinations, disorganized speech, and reduced emotional expression that interfere with school and relationships. Which broad DSM-5 category is most relevant?
- 2 A person has 6 months of excessive worry about many areas of life, muscle tension, poor sleep, and difficulty concentrating. Which disorder category best fits these symptoms?
- 3 Name two requirements, besides having symptoms, that are often needed for a DSM-5 diagnosis.
- 4 Why should psychologists avoid using DSM-5 categories as simple labels for judging a person's character or future?