TY - CHAP M1 - Book, Section TI - Petechiae and Purpura A1 - Friedman, Marla J. A1 - Mendoza, Carolina A2 - Tenenbein, Milton A2 - Macias, Charles G. A2 - Sharieff, Ghazala Q. A2 - Yamamoto, Loren G. A2 - Schafermeyer, Robert Y1 - 2019 N1 - T2 - Strange and Schafermeyer's Pediatric Emergency Medicine, 5e AB - Purpura may be a sign of an underlying life-threatening illness that requires immediate attention.Petechiae above the nipple line with a history of cough or vomiting may be benign and caused by increased venous pressure.Purpura is present in almost all patients with Henoch–Schönlein purpura (HSP), but it may not always be the presenting sign. This can cause a delay in the diagnosis.Consider idiopathic thrombocytopenic purpura (ITP) in a nontoxic-appearing child with absence of splenomegaly and a normal hemoglobin and white blood cell count.Child abuse should be suspected if bruising occurs in non-bony prominences or in areas not normally subjected to injury, or if the history is not consistent with the physical findings. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accesspediatrics.mhmedical.com/content.aspx?aid=1155428408 ER -