These may include allergic reactions , stomach upset, and headaches . Surgery carries a risk of bleeding, infection, and allergic reactions to anesthesia . Blood transfusions may cause allergic reactions or infections. Those who have simple fainting usually need no further monitoring or treatment. Those who have heart disease may need ongoing treatment for many years.
Most people are able to return to normal activities after treatment.
Those with frequent fainting may need to avoid certain activities, such as climbing ladders or driving. Specific monitoring depends on the underlying cause of the fainting. It may range from none at all to intense monitoring and follow-up. Any new or worsening symptoms should be reported to the healthcare provider. By visiting this site, you agree to the terms and conditions of our Visitor Agreement .