Weird spot after breast lift: I’m 5 weeks post-lift without implants. (Photos)

The T-junction where the vertical and horizontal incisions meet is a common place to have small separations in the incision given this area is under the most tension (and even more tension after some swelling), as well as being farthest away from the blood supply needed to heal the incision. In your photo, this is either a small area of delayed wound healing or an underlying suture that may be causing irritation. I would give a call to your surgeon's office to make sure this is not at risk of infection or a suture "spitting" out.

This is the inverted-T apex of the incision where the two side flaps of the breast were brought together and approximated to the incision of the breast fold. This is an area of tension and often there are special sutures placed to help this area hold together while healing. You may have a spitting absorbable suture, retained bit of nonabsorbable suture, or some delayed healing that resulted in a redder/thicker scar. Your surgeon should be able to guide you but if no implants were used, this is likely nothing to be concerned about.