Mets starting pitcher Matt Harvey faces season-ending surgery after having symptoms consistent with thoracic outlet syndrome. (AP Photo/Seth Wenig)

Matt Harvey, after being placed on the 15-day disabled list, is now facing season-ending surgery.

Sandy Alderson, the general manager of the New York Mets, spoke with the media Thursday, and addressed the starting pitcher’s condition. Harvey visited a vascular specialist in St. Louis earlier on Thursday and has symptoms that are consistent with thoracic outlet syndrome.

According to the Mayo Clinic, thoracic outlet syndrome or (TOS) ” is a group of disorders that occur when the blood vessels or nerves in the space between your collarbone and your first rib (thoracic outlet) become compressed. This can cause pain in your shoulders and neck and numbness in your fingers.”

Options for Harvey include “nerve-block injection or season-ending surgery.” The nerve block would be a temporary solution to the problem.

And that surgery doesn’t have the best success rate.

Harvey hasn’t decided what he’s going to do, but Alderson said the surgery is most likely inevitable; it’s just a matter of time.

Harvey’s next start was set to be Saturday night against the Nationals. Logan Verrett will be taking his spot.