HELLP syndrome epidemiology and demographics

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

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Overview

The incidence of HELLP is reported to be 0.2-0.6% of all pregnancies. Of women with preeclampsia, 4-12% also develop signs of a "superimposed" HELLP syndrome. HELLP usually begins during the third trimester, and usually in caucasian women over the age of 25. Rarely, cases have been reported as early as 23 weeks gestation.