Turner syndrome (TS) is among the most common of the sex chromosomal aneuploidies. It results from the absence of one sex chromosome (or part of an X chromosome) in a female, leaving only one X chromosome present in the cell. Primary care physicians should be able to recognize the presenting signs and symptoms of TS, and once the diagnosis is confirmed by a chromosome analysis, they should be able to serve as a valuable source of support for the patient and her family and understand the most current treatments available.