Importance Adults who remit from a substance use disorder (SUD) are often thought to be at increased risk for developing another SUD. A greater understanding of the prevalence and risk factors for drug substitution would inform clinical monitoring and management.

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Importance Posttraumatic stress disorder (PTSD) occurs in about 8% of pregnant women. Stressful conditions, including PTSD, are inconsistently linked to preterm birth. Psychotropic treatment has been frequently associated with preterm birth.

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Importance Studies have shown that attention-deficit/hyperactivity disorder (ADHD) is associated with transport accidents, but the magnitude of the association remains unclear. Most important, it is also unclear whether ADHD medication reduces this risk.

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Importance Although many studies have explored the correlates of violence during first-episode psychosis (FEP), most have simply compared violent psychotic individuals with nonviolent psychotic individuals. Accumulating evidence suggests there may be subgroups within psychosis, differing in terms of developmental processes and proximal factors associated with violent behavior.

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The overuse of smartphones and the Internet may lead to significant problematic behaviors in adolescents, including depression and aggression — and the greater the use, the greater the risk. Medscape Medical News

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Users of illicit drugs are now combining xylazine with other drugs of abuse and may be increasing their risk of death, according to new research. Reuters Health Information

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The number of vaccines administered, either in a single day or during the first 2 years of life, is not associated with the risk for autism, a new CDC study shows. Medscape Medical News

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