Whilst short-term nausea and vomiting are generally harmless, they may sometimes indicate a more serious disease. When associated with prolonged vomiting, it may cause dangerous levels of dehydration.
Symptomatic treatment for nausea and vomiting may include short-term avoidance of solid food. This is usually easy as nausea is nearly always associated with loss of apetite (anorexia). Dehydration may require rehydration with oral or intravenous electrolyte solutions. Oral rehydration is safer and simpler in most cases.
There are many antiemetic drugs to treat nausea, although the researchers continue to look for more effective treatments.