Fibromyalgia Syndrome David M. Siegel, MD, MPH Basic Information Definition Patients with fibromyalgia experience diffuse pain, have tender points demonstrated on physical examination, and have other symptoms but no inflammatory…
Wilson Disease Jeffrey M. Kaczorowski, MD Basic Information Definition Wilson disease is an autosomal recessive disorder of copper metabolism characterized by degenerative changes in the brain, liver disease, Kayser-Fleischer rings…
Stevens-Johnson Syndrome Susan Haller Psaila, MD Basic Information Definition Stevens-Johnson syndrome (SJS) is an exfoliative dermatitis with severe erosions of at least two mucosal surfaces, including extensive necrosis of oral…
Anemia, Iron Deficiency Jill S. Halterman, MD, MPH , George B. Segel, MD Basic Information Definition Iron deficiency anemia is caused by insufficient iron for the normal formation of hemoglobin….
Psittacosis Lorna M. Seybolt, MD, MPH Basic Information Definition Psittacosis is a systemic infection with Chlamydia (Chlamydophila) psittaci, named for psittacine birds. These birds were the organism’s earliest identified natural…
Tetralogy of Fallot Michael E. Mcconnell, MD Basic Information Definition Tetralogy of Fallot (TOF) is a form of congenital heart disease characterized by a ventricular septal defect (VSD), an “overriding”…
Heart Block J. Peter Harris, MD , Svetlana Tisma-Dupanovic, MD Basic Information Definition Complete heart block (CHB) is a bradycardic rhythm caused by failure of impulse conduction from the atria…
Differential Diagnosis Abdominal Mass The clinical classification of abdominal masses in children can be divided according to neonatal and postneonatal causes. Approximately one half of abdominal masses in newborns involve…
Trichomoniasis Nicole L. Mihalopoulos, MD, MPH Basic Information Definition Trichomoniasis is an infection of the genitourinary system (i.e., vagina, urethra, and periurethral glands) with the flagellated protozoa Trichomonas vaginalis. Synonym…
