Attacks are most common in the first trimester and in the morning. However, a few women suffer throughout the day. The condition, although usually mild and troublesome, may be severe and medical referral may be required. Any true vomiting in infants requires referral. It is normal and often simply the result of overfeeding, the ingestion of air with the feed, too rapid feeding, ineffective 'winding' or immaturity of the oesophageal sphincters.
Children require careful consideration.
Attribution of cause is essential. If this cannot be achieved, the patient must be referred. Nausea and vomiting may affect food and drug absorption, and increase fluid loss. Thus, diabetics and patients requiring drug therapy to maintain stability should be cautioned about the potential effects of altered blood drug levels. Allergies Normal precautions when prescribing a drug to a patient with nausea and vomiting should be followed.