Which of the following is a warning sign that requires immediate medical attention during pregnancy?

Severe abdominal pain, sudden swelling, visual disturbances, or severe headache are critical warning signs during pregnancy that demand immediate medical attention. These symptoms can indicate serious complications such as preeclampsia, gestational hypertension, or other obstetric emergencies.

Preeclampsia is a condition that can lead to severe maternal and fetal complications if not addressed promptly. Symptoms like sudden swelling (especially in the face and hands), visual disturbances (such as blurred vision or seeing spots), and a severe headache that doesn't respond to usual pain relief measures can signal the onset of this condition. Additionally, severe abdominal pain may indicate issues such as placental abruption or ectopic pregnancy.

In contrast, symptoms like fatigue during the day and increased appetite are generally common and often expected during pregnancy. Frequent urination is also typical due to hormonal changes and the growing uterus exerting pressure on the bladder. While these symptoms can be uncomfortable, they typically do not require urgent medical intervention. Recognizing the importance of the warning signs that suggest serious health risks allows for timely and potentially life-saving medical care during pregnancy.