Breast implant capsular contracture is a condition where scar tissue around an implant tightens, causing hardness, pain, or distortion. It is also known as implant fibrosis, capsular fibrosis, or periprosthetic capsular contracture. Symptoms range from mild firmness to severe discomfort and visible breast changes. Treatment options include massage, ultrasound therapy, medication, or surgical intervention like capsulectomy or implant replacement.