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Diagnostic Criteria for Delirium

Delirium is also known as acute confusional state, altered mental status, and toxic metabolic encephalopathy, among more than 30 descriptive terms. Delirium can be thought of as acute brain failure and is the final common pathway of multiple mechanisms, similar to acute heart failure. The official definition of delirium in the Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-5), requires a disturbance in attention and awareness that develops acutely and tends to fluctuate. The pathophysiological mechanisms of delirium remain poorly understood; leading models include neurotransmitter imbalance and neuroinflammation.
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Diagnostic Criteria for Post-Traumatic Stress Disorder (PTSD)

Post-Traumatic Stress Disorder (PTSD) is a condition of persistent mental and emotional stress occurring as a result of injury or severe psychological shock, typically involving disturbance of sleep and constant vivid recall of the experience, with dulled responses to others and to the outside world.
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Diagnostic Criteria for Narcolepsy (DSM-IV-TR)

Narcolepsy is characterized by permanent, overwhelming feelings of sleepiness and fatigue. Other symptoms include abnormalities of dreaming sleep, such as dream-like hallucinations and feeling physically weak or paralyzed for a few seconds.  Continue reading “Diagnostic Criteria for Narcolepsy (DSM-IV-TR)”

Criteria for the Diagnosis of Generalized Anxiety Disorder (DSM-V)

Generalized anxiety disorder is characterized by persistent anxiety and uncontrollable worry that occurs consistently for at least 6 months. This disorder is commonly associated with depression, alcohol and substance abuse, physical health problems, or all these factors.
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DSM-5 Diagnostic Criteria for Autism Spectrum Disorder (ASD)

The American Psychiatric Association has just published the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). The diagnostic criteria for autism spectrum disorder has been modified based on the research literature and clinical experience.
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Guidelines for the Diagnosis of Prolonged Grief Disorder

The death of a loved one is one of life’s greatest, universal stressors to which most bereaved individuals successfully adapt without clinical intervention. For a minority of bereaved individuals, grief is complicated by superimposed problems and healing does not occur. The resulting syndrome of complicated grief causes substantial distress and functional impairment even years after a loss, yet knowing when and how to intervene can be a challenge.
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DSM-5 Diagnostic Criteria for Major Depressive Disorder

The diagnostic criteria for major depression in the Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-5), require the presence of either sadness or anhedonia with a total of five or more symptoms over a 2-week period.
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