A bruise (ecchymosis) is caused by bleeding beneath the skin as a result of extravasation of blood from surrounding blood vessels. It may develop due to abnormalities in haemostasis or alteration in the structural integrity of the blood vessel wall and surrounding subcutaneous tissue.
Easy bruising implies that no significant trauma has occurred to the skin or soft tissue to cause the bruise, and the bruises are larger and/or more frequent than what would normally be seen. It is a common complaint of patients seen in a medical practice. Surveys of normal healthy individuals report the frequency of easy bruising to range from 12% to 55%.
Causes vary from those with no significant clinical consequence to underlying diseases that could be life-threatening such as severe bleeding disorders or bone marrow malignancies. Appropriate evaluation is crucial in reaching the correct diagnosis and treatment; therefore, a structured approach that incorporates the history, physical examination, and laboratory studies should be utilised. However, laboratory testing is costly and results can be confusing and require an experienced physician for proper interpretation.
Referral to a haematologist for further evaluation may be needed. Appropriate evaluation is especially important before invasive procedures.
- Hereditary haemorrhagic telangiectasia (HHT)
- Cushing's syndrome
- Child abuse
- Elder abuse
- Immune thrombocytopenia (ITP)
- Thrombotic thrombocytopenic purpura (TTP)
- Haemolytic uraemic syndrome (HUS)
- Disseminated intravascular coagulation (DIC)
- Wiskott-Aldrich syndrome
- MYH9-related disorders
- Bernard-Soulier disease
- Thrombocytopenia with absent radius (TAR) syndrome
- Glanzmann's thrombasthenia
- Acute myelogenous leukaemia
- Acute lymphocytic leukaemia
- Hodgkin's lymphoma
- Non-Hodgkin's lymphoma
- Multiple myeloma
- Solid tumour with infiltration of bone marrow
- Myelodysplastic syndrome
- Aplastic anaemia
- Factor V, VII, X, or XI deficiency
- Acquired coagulation inhibitors
- Vitamin C deficiency
- Marfan's syndrome
- Ehlers-Danlos syndrome
- Acute liver failure
- Gardner-Diamond syndrome
Assistant Professor of Internal Medicine
The Ohio State University
TW declares that she has received an honorarium from Daiichi Sankyo.
Professor of Internal Medicine
The Ohio State University
EHK declares that he has no competing interests.
Department of Medicine
DMA has received speaking honoraria from Amgen for presentation on immune thrombocytopenia; consulting fees from Amgen, and Bristol-Myers Squibb for ITP related studies; and research grants from Amgen, GlaxoSmithKline, and Hoffman-La Roche for clinical studies in ITP. He is co-author of a reference cited in this topic.
St. Joseph’s Healthcare Hamilton
DS declares that she has no competing interests.
Assistant Professor of Pediatrics
Nationwide Children’s Hospital
Ohio State University
RK declares that he has no competing interests.
Oxford Haemophilia & Thrombosis Centre
DK declares that he has no competing interests.
Professor of Haematology
University of Liverpool
CHT declares that he has no competing interests.
Heart of England NHS Foundation Trust
SP has received a speaker fee from Janssen.
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