Thrombocytopenia is a common hematologic abnormality in pregnancy, encountered in about 10% of pregnancies. There are many possible causes, ranging from benign conditions that do not require intervention to life-threatening disorders necessitating urgent recognition and treatment. While thrombocytopenia may be an inherited condition or predate pregnancy, most commonly it will be a new diagnosis. Identifying the responsible mechanism and predicting its course is made challenging by the …