2 weeks ago I had a cut on the right thumb that required stitches that went into the fatty layer. The wound healed well, and the stitches were removed after 10 days.
Today I re-stressed the area, and although the wound did not open a the surface, I believe I re-opened that fatty layer. It became dark down the center of the scar, and I can tell it is bleeding just below the surface.
Is this something that should require stitches again? Or will pressure work? Does the blood need to be released?
This is a older post, but for anyone with a similar question, the answer is that it does not need to be sutured again.
As long on the skin layer is intact, the area underneath will usually heal.
Also of note, usually, wounds that are more than a few hours old are not sutured, unless absolutely necessary (to cover nerves, tendons, joints, etc). Delay in closing wounds causes the rate of infection to go up dramatically, when the wound is then closed. So, in those cases, the wound is left to heal by secondary intention.
Almost all wounds will eventually heal on their own. We close wounds to make the scar appear better. But, the act of closing wounds can, in some cases, actually make the chance of infection higher. So, old or dirty wounds are usually left open, for the body to heal on its own, from the bottom up, by secondary intention.