Presyncope is the sensation of feeling faint without fainting. Although it's often a benign event, it can sometimes be a sign of a more serious health issue.

Presyncope is feeling like you are going to pass out. Learn what causes it, how it's treated, and more.

The differential was set up manually and further revealed neutrophils at 23 (ref range 39.3-73.7%), and lymphocytes 68 (ref range 18.0-48.3%). Hemoglobin and hematocrit were 12.2% and 36.9% ...

Neurally mediated syncope, or presyncope, usually has a rather typical presentation that includes 1 or more of the following signs or symptoms: nausea, vomiting, cold and clammy sensation, and ...

Results: At least one syncopal event during operation was reported by 4.7% and presyncope by 14.8% of the studied population. All but one subject reported prodromal symptoms before syncope.