The most current official edition of the American Psychiatric Association's diagnostic reference manual (you must provide the entire edition).
DSM-5-TR
Repetitive behaviors or mental acts an individual feels driven to perform in response to an obsession.
Obsessive Compulsive Disorder
A chronic, mild form of depression lasting for at least two years.
Persistent Depressive Disorder
A false, fixed belief that is firmly held despite clear contradictory evidence.
Delusion
Personality disorders can impair functioning in all domain of life; but this domain tends to be the most heavily impacted.
Interpersonal Dysfunction
The term for the simultaneous presence of two or more distinct psychiatric disorders in the same individual.
Comorbidity or Co-Occurring
This psychological disorder is characterized by excessive worry that is difficult to turn off, is persistent, and involves multiple different areas of life.
Generalized Anxiety Disorder
A less severe form of Mania lasting at least four consecutive days.
Hypomanic Episode
The experience of perceiving things in the absence of an external stimulus, most commonly auditory.
Hallucinations
The cluster name for Personality Disorders characterized by behavior that is odd or eccentric.
Cluster A
Criterion required for all psychological disorders in order to be able to apply a diagnosis.
Dysfunction or Impairment
A diagnosis given when an individual experiences flashbacks, hyper-vigilance, and avoidance of reminders for at least one month following a traumatic event.
Post-Traumatic Stress Disorder or PTSD
Loss of interest or pleasure in nearly all activities lasting for a duration of at least 2 weeks.
Major Depressive Disorder (depressive episode)
These symptoms represent an excess or distortion of normal functions, including delusions, hallucinations, and disorganized thinking.
Positive Symptoms
The Cluster B disorder defined by a pervasive pattern of grandiosity, need for admiration, and lack of empathy.
Narcissistic Personality Disorder
The process of determining which of two or more disorders are appropriate.
Differential Diagnosis
Excessive anxiety or worry about future panic is a key component of this anxiety disorder.
Panic Disorder
A period of elevated, expansive, or irritable mood lasting for a duration of at least one week.
Manic Episode
A disorder involving a Major Depressive or Manic Episode concurrent with symptoms of Schizophrenia.
Schizoaffective Disorder
The Cluster B disorder characterized by intense fear of abandonment, unstable identity, and chronic feelings of emptiness.
Borderline Personality Disoder
The type of approach, in contrast to the categorical approach, that views symptoms on a scale or spectrum of severity rather than as a strict "yes/no" diagnosis.
Dimensional Approach
Fear of being judged or embarrassed in social or performance situations.
Social Anxiety Disorder (or Social Phobia)
The mood disorder characterized by Major Depressive Episodes and at least one Hypomanic Episode.
Bipolar Disorder II
This general class of schizophrenia symptoms includes deficits like alogia (poverty of speech), avolition (lack of motivation), and flat affect, representing a lack of typical behaviors.
Negative Symptoms
The general label for Cluster C personality disorders, reflecting common features of nervousness, inadequacy, and fear.
Anxious or Fearful