gynecology and obstetrics
Nausea and Vomiting During Early Pregnancy
Etiology
The most common causes of uncomplicated nausea and vomiting during early pregnancy (see table) are Nausea and vomiting of pregnancy (most common) Hyperemesis gravidarum Overview of Gastroenteritis None Occasionally, prenatal vitamin preparations with iron cause nausea. Rarely, severe, persistent vomiting results from a Gestational Trophoblastic Disease . Vomiting can also result from many nonobstetric disorders. Common causes of acute abdomen (eg, appendicitis, cholecystitis) may occur during pregnancy and may be accompanied by vomiting, but the chief complaint is typically pain rather than vomiting. Similarly, some central nervous system (CNS) disorders (eg, migraine, CNS hemorrhage, increased intracranial pressure, meningitis) may be accompanied by vomiting, but headache or other neurologic symptoms are typically the chief complaint. 