Sperling Pediatric Endocrinology

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Lipid Disorders in Children and Adolescents

Introduction Atherosclerotic cardiovascular disease (ASCVD) is a major cause of morbidity and mortality among adults in industrialized countries. Dyslipidemia (specifically elevated low-density lipoprotein [LDL] cholesterol, low high-density lipoprotein [HDL] cholesterol, and high non-HDL cholesterol and triglycerides [TGs]) has been identified…

Hypoglycemia in the Toddler and Child

Introduction Glucose is an obligate fuel for the brain under physiological conditions. The brain can neither synthesize glucose nor store more than approximately a 20-minute supply of glycogen; therefore brain survival requires a continuous supply of glucose. The brain can…

Autoimmune Polyglandular Syndromes

Introduction The autoimmune polyglandular syndromes (APS) are uncommon constellations of organ-specific autoimmune diseases characterized by the occurrence of more than one autoimmune disease in an affected individual ( Table 22.1 ). Although autoimmune endocrine disorders commonly affect single organs, multiorgan…

Diabetes Mellitus

Introduction Diabetes mellitus (DM) is a syndrome of disturbed energy metabolism involving carbohydrate, protein, and fat brought about by absolute or relative deficiency of insulin secretion, in the context of sensitivity or resistance to insulin actions at various tissue sites.…

Care of Transgender/Gender Nonconforming Youth

Introduction Concurrent with increasing public awareness of individuals whose gender identity is not aligned with their physical sex characteristics, there has been an increasing number of gender nonconforming/transgender youth seeking medical services to enable the development of physical characteristics consistent…

Puberty and Its Disorders in the Male

Puberty is the process through which children attain adult secondary sexual characteristics and reproductive capability. In humans, two distinct processes of sexual maturation are recognized: gonadarche and adrenarche. Gonadarche is defined as the growth and maturation of the gonads, resulting…

Turner Syndrome

Historical background Turner syndrome (TS) is defined as a disorder caused by complete or partial absence of the second sex chromosome, with or without cell line mosaicism. This further needs to be associated with one or more characteristic physical features…