Obgyn Key

119 Disorders of Sexual Development Chad R. Haldeman-Englert, Jennifer M. Kalish The development of the internal and external male and female reproductive systems from early embryogenesis through puberty involves a…

106 Neonatal Resuscitation Shazia Bhat Resuscitation of newborns has been documented as far in the past as the 16th century BC, at which time descriptions were recorded of newborns that…

125 Acne Erin Pete Devon Acne vulgaris is the most common skin condition of teenagers, affecting up to 85% of adolescents and frequently continuing into adulthood. Increases in circulating hormones…

110 Inflammatory Bowel Disease Jessica Wen, Rose C. Graham Inflammatory bowel disease (IBD) is an idiopathic, likely immune-mediated, inflammatory disease involving the gastrointestinal (GI) tract. There are two subtypes, ulcerative…

126 Nevi Leslie Castelo-Soccio, James R. Treat Etiology And Pathogenesis Common moles, or melanocytic nevi, are benign proliferations of melanocytes called nevus cells. They can appear tan, light brown, brown,…

75 Headache Christina Lynch Szperka Headache is a very common symptom in children. Epidemiologic studies estimate that approximately 20% of children have experienced a headache by the age of 5…

124 Hyperpigmented Skin Disorders Vikash S. Oza From the newborn period through young adulthood, hyperpigmented skin lesions are one of the most common findings on physical examination. Although often of…

89 Sexually Transmitted Infections Kristen A. Feemster Sexually transmitted infections (STIs) present a significant source of morbidity among adolescents, especially young women. According to 2007 surveillance data, adolescents represent 25%…

116 Principles of Human Genetics Kathryn Chatfield Recent data have suggested that 71% of pediatric hospital admissions were for children with an underlying disorder with a significant genetic component, including…

87 Infections of the Head and Neck Jessica L. Hills Cervical Lymphadenitis Cervical lymph node enlargement is a common problem in children and adolescents. Almost all children have small palpable…