The bruise is accompanied by extreme swelling or severe pain. The person is taking blood-thinning medications.

Apply a cold pack for 10–20 minutes several times a day during the first 48 hours to constrict blood vessels and reduce leaking. Compression: Use an elastic bandage to minimize swelling.

Within 1–2 days, the blood loses oxygen and becomes darker.

A bruise appears after a blow to the head or trunk, which could indicate internal injury. If you are experiencing specific symptoms,

Around day 5–10, the body begins breaking down haemoglobin into biliverdin .

In the final stages (day 10–14), the substance becomes bilirubin before the mark fades completely. Prevention and Care