IMPORTANCE Allergic diseases are prevalent in childhood. Early exposure to medications that can alter the microbiome, including acid-suppressive medications and antibiotics, may influence the likelihood of allergy. OBJECTIVE To determine whether there is an association between the use of acid-suppressive medications or antibiotics in the first 6 months of infancy and development of allergic diseases in early childhood. DESIGN, SETTING, AND PARTICIPANTS A retrospective cohort study was conducted in 792 130 children who were Department of Defense TRICARE beneficiaries with a birth medical record in the Military Health System database between October 1, 2001, and September 30, 2013, with continued enrollment from within 35 days of birth until at least age 1 year. Children who had an initial birth stay of greater than 7 days or were diagnosed with any of the outcome allergic conditions within the first 6 months of life were excluded from the study. Data analysis was performed from April 15, 2015, to January 4, 2018. EXPOSURES Exposures were defined as having any dispensed prescription for a histamine-2 receptor antagonist (H 2 RA), proton pump inhibitor (PPI), or antibiotic. MAIN OUTCOMES AND MEASURES The main outcome was allergic disease, defined as the presence of food allergy, anaphylaxis, asthma, atopic dermatitis, allergic rhinitis, allergic conjunctivitis, urticaria, contact dermatitis, medication allergy, or other allergy. RESULTS Of 792 130 children (395 215 [49.9%] girls) included for analysis, 60 209 (7.6%) were prescribed an H 2 RA, 13 687 (1.7%) were prescribed a PPI, and 131 708 (16.6%) were prescribed an antibiotic during the first 6 months of life. Data for each child were available for a median of 4.6 years. Adjusted hazard ratios (aHRs) in children prescribed H 2 RAs and PPIs, respectively, were 2.18 (95% CI, 2.04-2.33) and 2.59 (95% CI, 2.25-3.00) for food allergy, 1.70

WHAT'S KNOWN ON THIS SUBJECT:Military deployment of a parent influences children's behavior in a variety of settings. The clinical significance of these deployment-associated behavior changes has not been determined. WHAT THIS STUDY ADDS:Children experiencing separation from a parent due to wartime military deployment have an 11% increase in outpatient visits for mental and behavioral health complaints, which contrasts with a general deploymentassociated decrease in health care visits in all other diagnostic categories.abstract BACKGROUND: Children of military personnel face stress when a parent deploys. OBJECTIVE: Our goal was to determine the effect of parental military deployment on the relative rate of outpatient visits for mental and behavioral health disorders in children aged 3 to 8 years. METHODS:This was a retrospective cohort study. Records of children of active-duty personnel during fiscal years 2006 and 2007 were linked with their parent's deployment records. Mental and behavioral health visits were identified by using International Classification of Diseases, Ninth Revision, codes. The incidence rate ratio (IRR) of visits per year according to parental deployment status was determined with random-effects negative binomial regression modeling with longitudinal data analysis. RESULTS: A total of 642 397 children aged 3 to 8 years and 442 722 military parents were included. Mean child age was 5.0 years (SD: 1.9 years); 50.6% were male, and 68.0% were white. Ninety percent of the parents were male, and 90.5% were married; 32.0% of the parents were deployed during the study. There were 1 049 081 person-years with 611 115 mental and behavioral health visits (0.6 visit per year). The IRR of mental and behavioral health visits for children with a deployed parent compared with when a parent was home was 1.11 (95% confidence interval [CI]: 1.07-1.14; P Ͻ .001). IRRs of pediatric anxiety, behavioral, and stress disorders when a parent deployed were 1.14 (95% CI: 0.98 -1.32; P ϭ .095), 1.19 (95% CI: 1.07-1.32; P Ͻ .001), and 1.18 (95% CI: 1.10 -1.26; P Ͻ .001), respectively. Older children and children with military fathers and married parents had larger increases in rates of mental and behavioral health visits during parental deployments. In contrast, the overall outpatient rate and rates of visits for other diagnoses decreased when a parent was deployed. CONCLUSIONS: Mental and behavioral health visits increased by 11% in these children when a military parent deployed; behavioral disorders increased 19% and stress disorders increased 18%. Rates especially increased in older children and children of married and male military parents.

ASD is associated with a range of prenatal, perinatal, and neonatal factors, with the highest magnitude associations with maternal medication use and neonatal seizure.

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WHAT'S KNOWN ON THIS SUBJECT: Several studies have shown that behavioral problems can be associated with defecation and voiding disorders, although few studies have looked directly at a link between a diagnosis of attention-deficit/hyperactivity disorder (ADHD) and constipation or fecal incontinence. WHAT THIS STUDY ADDS:We identified an increased risk for both constipation and fecal incontinence in children with ADHD. In patients with concomitant ADHD and defecation disorders, more aggressive medical and behavioral treatment of the constipation or fecal incontinence may be warranted. abstract OBJECTIVE: Functional constipation and fecal incontinence are common childhood gastrointestinal conditions. Both conditions may be associated with behavioral problems. Attention-deficit/hyperactivity disorder (ADHD) is the most common behavioral disorder of childhood, characterized by shortened attention span and hyperactivity. We hypothesize that a diagnosis of ADHD increases the risk for functional constipation and fecal incontinence. METHODS:A retrospective cohort study of children was performed by using the military health system database. Children of active-duty military personnel, aged 4 to 12 years, from October 2005 to September 2007, were included. ADHD, constipation, and fecal incontinence were identified by International Classification of Diseases, Ninth Revision, Clinical Modification diagnostic codes. Relative risks and adjusted incidence rate ratios (IRRs) were calculated. A subgroup analysis of subjects receiving medical therapy was performed.RESULTS: There were 742 939 children identified in the study, 32 773 (4.4%) of whom had ADHD. Children with ADHD had an increased prevalence of constipation (4.1% of children with ADHD vs 1.5% children without ADHD; P , .001) and fecal incontinence (0.9% of children with ADHD vs 0.15% of children without ADHD; P , .0001). Children with ADHD had more visits than those without ADHD for both constipation (IRR 3.39; 95% confidence interval 2.59-4.43) and fecal incontinence (IRR 7.74; 95% confidence interval 5.01-11.98). Children with ADHD receiving medicinal therapy did not differ significantly from children with ADHD not receiving medicinal therapy on rates of constipation visits (P = .57) or fecal incontinence visits (P = .32). CONCLUSIONS:Children with ADHD are significantly more likely to have constipation and fecal incontinence. Medical therapy for ADHD does not impact visit rates for defecation disorders.

BACKGROUND: Acid suppression therapy (AST), including proton pump inhibitors (PPIs) and histamine H 2 -receptor antagonists (H 2 RAs), is frequently prescribed to treat symptomatic gastroesophageal reflux in otherwise healthy infants. PPI use has been associated with increased fracture risk in older adults; 2 preliminary studies in children have conflicting results. METHODS:A retrospective cohort of children born 2001 to 2013 who were followed for $2 years was formed. Those with osteogenesis imperfecta, cholestasis, or child maltreatment were excluded. Prescription data were used to identify AST prescription before age 1 year. International Classification of Diseases, Ninth Revision, Clinical Modification codes identified fractures after age 1 year. A Cox proportional hazard analysis assessed fracture hazard and was adjusted for sex, prematurity, low birth weight, previous fracture, anti-epileptics, and overweight or obesity.RESULTS: Of 851 631 included children, 97 286 (11%) were prescribed AST in the first year of life; 7998 (0.9%) children were prescribed PPI, 71 578 (8%) were prescribed H 2 RA, and 17 710 (2%) were prescribed both a PPI and H 2 RA. Infants prescribed AST had an earlier median first fracture age (3.9 vs 4.5 years). After adjustment, increased fracture hazard was associated with PPI use (21%) and PPI and H 2 RA use (30%), but not H 2 RA use alone. Longer duration of AST treatment and earlier age of first AST use was associated with increased fracture hazard.CONCLUSIONS: Infant PPI use alone and together with H 2 RAs is associated with an increased childhood fracture hazard, which appears amplified by days of use and earlier initiation of ASTs. Use of AST in infants should be weighed carefully against possible fracture.WHAT'S KNOWN ON THIS SUBJECT: Proton pump inhibitors (PPIs) are used frequently in the treatment of symptomatic gastroesophageal reflux. Studies in adults have revealed an association between PPIs and increased fracture risk, but this has not been well studied in infants and children. WHAT THIS STUDY ADDS:This study included young children without known serious medical conditions prescribed acid suppression therapy during the first year of life, likely for symptomatic treatment of reflux. A positive association was found between PPI use and childhood fracture incidence.

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Autism spectrum disorders (ASD) and inflammatory bowel disease (IBD) both have multifactorial pathogenesis with an increasing number of studies demonstrating gut-brain associations. We aim to examine the association between ASD and IBD using strict classification criteria for IBD. We conducted a retrospective case-cohort study using records from the Military Health System database with IBD defined as having one encounter with an ICD-9-CM diagnostic code for IBD and at least one outpatient prescription dispensed for a medication to treat IBD. Children with ASD were more likely to meet criteria for Crohn's disease (CD) and Ulcerative colitis (UC) compared to controls. This higher prevalence of CD and UC in children with ASD compared to controls confirms the association of ASD with IBD.