Dr. Kliegman and Dr. Bordini have written a primer on Undiagnosed and Rare Diseases in Children. Leading experts have presented the current knowledge in the following areas: How Doctor’s Think: Common Diagnostic Errors in Clinical Judgment; Team-Based Approach to Undiagnosed and Rare Diseases; Ending a Diagnostic Odyssey: Family Education Counselling and Their Response to Eventual Diagnosis; Eczema and Urticaria as Manifestations of Undiagnosed and Rare Diseases; Usual and Unusual Manifestations of Familial Hemophagocytic and Langerhans Cell Histiocytosis Syndromes; When Autistic Behavior Suggests a Disease Other than Classic Autism; Non-classic Inflammatory Bowel Disease in Young Infants; IPEX and Other Disorders; Usual and Unusual Presentation of Mitochondrial Disorders; When to Suspect Auto-inflammatory/Recurrent Fever Syndromes; Primary and Secondary Causes of Autonomic Dysfunction; Usual and Unusual Manifestations of Systemic and CNS Vasculitis; Fever of Unknown Origin; Differentiating Familial Neuropathies from Guillain-Barre Syndrome; and Munchausen by Proxy: A Factitious Undiagnosed Disease. Readers will come away with cutting-edge information to use immediately in their clinical management of patients.

With consultation of Dr. Bonita Stanton, Consulting Editor, Drs. Li and Higgins have secured experts in the field to provide clinical reviews on the latest updates in diagnosing and treating children with rheumatologic disease. The issue contains articles on the following topics: Approach to the Child with Joint Pain; What goes wrong that Leads to Rheumatic Disease; Juvenile Idiopathic Arthritis; Spondyloarthropathies; Systemic Arthritis; Systemic Lupus Erythematosus; Sjogren’s and Mixed CTD in Children and Adolescents; Idiopathic Inflammatory Myopathies in Children; Juvenile Scleroderma; Chronic Non-Infectious Osteomyelitis and Chronic Recurrent Multifocal Osteomyelitis; Non-Inflammatory Musculoskeletal Pain in Children or Pediatric Pain Syndromes; Complications of Immunosuppressive and Biologic Response Modifier Therapy; General Health Concerns and Fitness for the Child with Rheumatic Disease; Transition of Rheumatic Disease Care: Pediatric to Adult Care; and Advocacy for Children with Rheumatic Diseases. Readers will be able to utilize the information in the issue to improve outcomes in patients with rheumatologic disease.

Children in developing countries continue to be susceptible to infectious and non-infectious disorders that lead to growth retardation, cognitive impairment and high infant and childhood mortality. Clinical, epidemiologic and pathogenetic studies are providing opportunities to intervene against these disorders as never before. In this issue, international experts in child health offer their perspectives on the problems of greatest import to the health of children growing up in impoverished environments. Opportunities for research and intervention are particularly emphasized. Articles are specifically devoted to the following topics: Child Health and Survival in a Changing World; Childhood Nutrition and Growth; Children with Disabilities in the Developing Nations; The Burden of Enteropathy and Subclinical Infections; Malaria in Children; The Unholy Trinity: Nematode Infections in Developing Countries; The Burden and Etiology of Diarrheal Illness in Developing Countries; Intestinal Protozoal Infections; Pneumonia and Respiratory Infections; Primary Bacteremia and Meningitis in Developing Countries; Neonatal and Perinatal Infections; HIV in Developing Countries; and Tuberculosis in Children.

In this issue of Medical Clinics of North America, guest editors Drs. Heather Toth, Robert Kliegman, and Brett Bordini brings their considerable expertise to the topic of Adolescent Undiagnosed and Rare Diseases. Top experts address diagnostic dilemmas, disease mimics, unusual manifestations of common diseases, and rare disorders presenting as more common diseases in adolescents. - Contains 15 relevant, practice-oriented topics including syndromes with severe acne; common variable immunodeficiency (CVID); overlapping pain syndrome; late onset congenital hypoventilation syndrome (LOCH); adolescent onset of muscle weakness; and more. - Provides in-depth clinical reviews on adolescent undiagnosed and rare diseases, offering actionable insights for clinical practice. - Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create clinically significant, topic-based reviews.

Dr. Felice has put together clinical reviews articles that cover a broad scope of clinical issues that are common among sexually active adolescent patients. Some issues addressed include: HPV Vaccine Update; Treating Dysmenorrhea/Menorrhagia; New STD Guidelines; Emergency Contraception; Talking to Parents about Teen Sexuality; and Long-acting Reversible Contraception. Most pediatricians feel poorly equipped to address these problems. They are also complicated issues that give the average pediatric clinician pause and often take more time than usually scheduled in a busy practice. By providing practical updated information on these clinical problems, pediatric practitioners can become more comfortable in dealing with these topics. Although many clinicians are not involved with adolescents in the juvenile justice system, Dr. Felice included an article on this so that pediatricians can be more educated and sensitive to the needs of these young people. An article on human trafficking of teens in included with the hope bringing awareness of this issue. Articles in this issue were selected specifically because they directly affect primary pediatric care. For example, an article is included on how to help young people avoid being victims of partner violence rather than an article on sexual abuse and rape because adolescents would be treated in the emergency room and not the pediatrician’s office.

The Guest Editors have tapped top key opinion leaders to provide current reviews on the clinical diagnosis and treatment of gastrointestinal disease in children. They have focused on topics related to GERD; Celiac Disease and Gluten Sensitivity; IBD; Motility Disorders; GI Bleeding and Management; Pancreatic Disorders; Hepatitis B and C; Liver Transplant; Abdominal Pain; Complications from Obesity; and Neonatal Cholestasis.These articles will provide a state-of-the-art overview of diagnosis and treatment of GI diseases that are impactful for the general pediatrician.

This issue of Immunology and Allergy Clinics, guest edited by Mariana Castells, is devoted to Drug Hypersensitivity and Desensitizations. Articles in this issue include: Principles and Practice of Drug Desensitization; Incidence and Prevalence of Drug Hypersensitivity; Drug-Induced Anaphylaxis; Penicillin and Beta Lactam Hypersensitivity; Platins Chemotherapy Hypersensitivity: Prevalence and Management; Monoclonal Antibodies Hypersensitivity: Prevalence and Management; Injectable Drugs and MoAbs Reactions and Management with Desensitization; Delayed Cutaneous Reactions to Antibiotics, Management with Desensitization; Management of Children with Hypersensitivity to Antibiotics and MoAbs; Taxenes Hypersensitivity and Management; Progesterone Autoimmune Dermatitis; Severe Delayed Drug Reaction: Role of Genetics and Viral Infections; andAspirin and NSAIDS Hypersensitivity and Management.

This issue of Immunology and Allergy Clinics, Guest Edited by Dr. J. Andrew Bird, is devoted to Food Allergy. Articles in this outstanding issue include: Prevention of Food Allergies; Epidemiology of Food Allergy; Oral Tolerance Development and Maintenance; Diagnosis of Food Allergy; Food Allergy Management; Interventional Therapies for the Treatment of Food Allergy; Baked Milk and Egg as Oral Immunotherapy; Adjuvant Therapies for Desensitization; Alternative Therapies for Treatment of Food Allergy; Food Protein-Induced Enterocolitis Syndrome (FPIES); Diagnosis and Management of Eosinophilic Esophagitis; and Unfounded Diagnostic Procedures.

Pediatricians care for children and families from all walks of life. Some are children known from neighborhoods. Others are children from distant lands. Pediatric focus does not stop with the physical care of children but extends to include their mental and social-emotional health and concern about their families. Pediatricians care about how children are doing at home, at school, and in their communities. In this era, children and their families are impacted by social and political changes in their homes (social media and screen time), in their communities (refugee populations and children requiring palliative supports at school), in their health care networks (EMR in every tertiary pediatric center), and in the larger world (multiple military deployments of fathers and mothers). This issue explores the impact of contemporary public health challenges for pediatric care, promising models for caring for chronically ill children, and state of the art therapies for complex childhood conditions.

In collaboration with Consulting Editor, Dr. Lucky Jain, Drs. Robert Kliegman and Bret Bordini have put together topics that provide a current clinical update on the treatment and management of undiagnosed and rare diseases in the neonate. Expert authors have contributed clinical review articles on the following topics: Neonatal Liver Failure; Neonatal Autoinflammatory Disorders; Rare or Unusual Dermatologic Disorders In Neonates; Neonatal Immune Deficiency; Congenital Diarrhea Syndromes; Nonimmune Hydrops; DNA Depletion Syndromes; Genomic Approach to Dysmorphology Syndromes; Nonimmune Anemias; Severe Metabolic Crisis (Metabolic Acidosis, Unresponsive Hypoglycemia, Hyperammonemia); Heterotaxia Syndromes; Neonatal Appendicitis; Avoiding Diagnostic Errors in Neonatology; and Differentiating Congenital Myopathy from Congenital Muscular Dystrophy. Readers will come away with the information they need to improve outcomes in the neonate.