The sprain can cause the capillaries under the skin to rupture and bleed, resulting in localized bruising. How long it takes for the bruise to heal is related to the severity of the injury, the patient’s physique, and whether or not the patient receives timely and effective treatment. If the symptoms of bruising after sprain are relatively mild, it will improve in about a week after timely application of cold compresses, ointment to activate blood circulation and remove blood stasis, reduce swelling and pain, and brake rest. If the symptoms are serious, it may take about two weeks for the bruising to dissipate. If the patient’s symptoms are very obvious or even accompanied by a fracture, the bruising may take about 2-3 weeks to slowly disappear. If the acute phase of the sprain is not iced in time, instead of rubbing it will aggravate the soft tissue damage and make the bruising take longer to recover. If bruising occurs after a sprain and does not improve in time after treatment, go to the hospital to take x-rays to rule out a fracture and take further treatment plans after a clear diagnosis.