Criteria for the Diagnosis of Attention Deficit–Hyperactivity Disorder (ADHD)

According to the Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-5), attention deficit–hyperactivity disorder (ADHD) is characterized by symptoms of impulsivity, inattention, and hyperactivity that emerge in childhood.

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Diagnostic Criteria for Nonviable Pregnancy Early in the First Trimester

New criteria for the use of ultrasonography to assess prenatal viability, introduced by the Society of Radiologists in Ultrasound, will help ensure obstetricians are not too hasty in determining that an embryo has ceased developing.

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Diagnostic Criteria for Dementia with Lewy Bodies (DLB)

Synucleinopathies, with and without dementia, encompass a wide range of diseases including Parkinson’s disease, multiple system atrophy, rapid eye movement (REM) sleep behavior disorder, and dementia with Lewy bodies (DLB). DLB is a neurodegenerative disorder resulting in slowly progressive and unrelenting dementia until death.

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Diagnostic Criteria for Chronic HBV Infection

Chronic HBV infection is a necroinflammatory disease of the liver caused by persistent infection with HBV, and can be categorized as hepatitis B e antigen (HBeAg) positive or negative. Inactive hepatitis B surface antigen (HBsAg) carriers have HBV infection of the liver without significant, ongoing necroinflammatory disease. HBV infection is resolved when there is no further virologic, biochemical, or histologic evidence of active viral infection or disease.

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Clinical Criteria for the Diagnosis of Acute Bacterial Sinusitis

Acute bacterial sinusitis in children is diagnosed on the basis of the history, with the use of the criteria. Imaging studies (plain-film radiography, computed tomography [CT], magnetic resonance imaging [MRI], and ultrasonography) show signs of sinus inflammation but are not recommended in patients with uncomplicated infection, given the low specificity of these studies.

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