Bruising

Most bruises form after a bump or injury and fade on their own. Frequent, large, or unexplained bruising can sometimes indicate bleeding disorders, medication effects, or vitamin deficiencies.

Table of Contents

Quick Facts

  • ICD-10: R23.3
  • Color changes over: 1–2 weeks

Common Causes

  • Injury or pressure
  • Easy bruising in aging (thinner skin, fragile vessels)
  • Medications — aspirin, anticoagulants, steroids, NSAIDs
  • Vitamin C or K deficiency
  • Bleeding disorders (von Willebrand disease, hemophilia)
  • Low platelet count (thrombocytopenia)
  • Liver disease
  • Leukemia or other blood cancers
  • Domestic violence (clinicians screen sensitively)

When to See a Doctor

  • Frequent unexplained bruising
  • Large or painful bruises without obvious cause
  • Bruising with bleeding gums, frequent nosebleeds, or heavy periods
  • Bruising with fatigue, weight loss, fever, or bone pain
  • Bruising in unusual locations (back, abdomen)
  • Anyone on blood thinners with significant bruising

Related Symptoms

Bleeding Disorder

Possible cause

 Vitamin Deficiency

Possible cause
Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about a medical condition. If you are experiencing a medical emergency, call your local emergency number immediately.

References

  • American Society of Hematology. Bruising Patient Resources.