Preeclampsia is a condition characterized by high blood pressure and signs of damage to another organ system, often the kidneys, occurring after 20 weeks of pregnancy. Symptoms can include severe headaches, vision changes, and swelling of the hands and face. Management typically involves regular monitoring of blood pressure and urine, and in severe cases, early delivery of the baby may be necessary. Medications such as antihypertensives and corticosteroids may be prescribed to manage symptoms and prolong the pregnancy.