A bruise typically forms when small blood vessels near the skin’s surface break from an injury, says Mayo Clinic. Blood then leaks from the vessels, appearing as a black-and-blue mark. Some people are more prone to bruising than others.
Bruising easily may be triggered by:
- Gender and age-related factors.
- Aspirin and other medications that affect clotting.
- Use of corticosteroid medication.
- Dietary supplements, such as ginkgo.
Sometimes, bruising easily can indicate a serious blood-clotting condition. Mayo Clinic urges people to see a doctor if bruising is frequent or sudden, or if there is a family history of bruising easily.