Which of the following is a common symptom of hyperemesis gravidarum?

Hyperemesis gravidarum is a severe form of nausea and vomiting during pregnancy that can lead to significant health issues for both the mother and the fetus. One of the hallmark symptoms of hyperemesis gravidarum is dehydration and electrolyte imbalance. This occurs because the persistent vomiting can lead to a loss of fluids and essential electrolytes, which can result in complications such as dehydration.

Dehydration manifests as decreased urine output, dry mouth, and feelings of dizziness or fatigue. Electrolyte imbalances can affect various bodily functions, leading to heart rhythm disturbances and neurological issues. Therefore, monitoring and managing these symptoms is crucial in pregnant individuals diagnosed with hyperemesis gravidarum to ensure the health and safety of both mother and baby.

The other options do not reflect the nature of hyperemesis gravidarum. Excessive weight gain contrasts with what is usually observed; individuals may actually lose weight as a result of severe vomiting. Increased appetite would not be a symptom, as nausea typically suppresses appetite. Stable blood pressure can misleadingly suggest normalcy when, in fact, the condition can cause fluctuations in blood pressure due to dehydration.