Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) preeclampsia ?
    ### Response:
    Preeclampsia is a complication of pregnancy in which affected women develop high blood pressure (hypertension) and can also have abnormally high levels of protein in their urine. This condition usually occurs in the last few months of pregnancy and often requires the early delivery of the infant.
    