The bulging of the place where the stitches were removed can be caused by inflammatory infection, tension blisters, allergic reaction, or abnormal proliferation and other factors. 1. Inflammatory infection: the wound of the needle local inflammatory infection, tissue pus manifestation, can be formed in the local bulge-like manifestations. 2. Tension blisters: the local wound is knotted too tightly before suture removal, or the tissue inside the wound is ligated too tightly, the blood circulation of the local tissue is blocked, the vascular exudation increases, and the accumulation of tissue fluid can form a bulge in the local area. 3. Allergic reaction: an allergic reaction occurs in the knot inside the wound, or an allergic reaction occurs in the wound to the dressing patch used outside the wound, mast cells release histamine, which can increase vascular permeability and exudate, and then appear localized bulging. 4. The bulging of the place where the stitches were removed may be caused by abnormal proliferation. After removing the stitches, you should consult a doctor in a timely manner, under the guidance of a specialist to actively carry out appropriate treatment, which will help to alleviate the discomfort as soon as possible.