Definition of Morning sickness

Morning sickness: Nausea and vomiting of pregnancy.

Morning sickness is a misnomer, because it can occur at any time of the day (though not at night during sleep) and it is not a sickness. It is a normal characteristic of early pregnancy.

Morning sickness is now believed to be a good thing since it appears associated with a reduced risk of miscarriage and a greater chance that the pregnancy will have a healthy outcome.


Last Editorial Review: 8/28/2013

Search MedTerms:


Back to MedTerms online medical dictionary A-Z List
Pill Identifier Tool

Need help identifying pills and medications?
Use the pill finder tool on RxList.