Had a breast lift with general anesthesia, is the hair loss a common side effect?

Not specifically: You may have had a reaction to the medication or it could be just the physical stress of the surgery.

It can be: Hair loss can occur as a result of general anesthesia. And while the actual mechanism for the hair loss is not well understood, it is thought to be a reaction to the stress of the anesthesia itself. Most cases are short lived and the hair grows back but this is not always the case. Best to consult with a dermatologist to learn more about your options.

No: I've never seen that, but it probably doesn't have anything to do with the breast lift per se

Not uncommon: While it is rare, hair loss during surgery is not uncommon. The result could be either from the anesthesia itself or the stress the body undergoes during surgery.