Difficult Issues in Internal Medicine Practice; Approach to a Patient with Ecchymosis

Difficult Topics in Internal Medicine Practice: Approach to the Patient with Ecchymosis

Dr. Sertas Erarslan

Kütahya Health Sciences University, Faculty of Medicine, Department of Internal Medicine

Introduction and Aim

Ecchymosis is a purple-black skin lesion of variable size, generally larger than 1 cm in diameter, resulting from bleeding or extravasation in the skin, mucosa/sub-mucosa, or subcutaneous tissues due to loss of vascular wall integrity. Bleeding is initially red in color and, over time, evolves through blue-purple hues before turning green-yellow as hemoglobin is broken down. Loss of vascular wall integrity may result from traumatic causes, but non-traumatic causes—known as “easy bruising” and seen in up to 55–60% of healthy individuals—may also play a role. The aim of this review is to summarize a systematic approach to the patient presenting with ecchymosis in internal medicine practice, within the framework of definition, pathophysiology, classification, clinical evaluation, differential diagnosis, and diagnostic algorithm.

Pathophysiology and Classification

Normal hemostasis depends on a normal platelet count and function, adequate coagulation factors, and intact vascular wall integrity. A disturbance in any of these components can lead to skin lesions classified by size as petechiae (<4 mm), purpura (4–10 mm), ecchymosis (>1 cm), or hematoma (deeper bleeding that produces swelling). Etiologically, ecchymoses can be divided into traumatic causes (blows, collisions, falls; the possibility of a forensic case should be kept in mind) and non-traumatic causes (disorders of platelet number/function, coagulation cascade disorders, and pathologies of the vascular wall and surrounding tissue).

Clinical Evaluation

A detailed history is the first step: how the lesion appeared (spontaneous vs. traumatic), any prior similar episodes, accompanying pain or itching, known systemic disease, use of medications and dietary supplements (anticoagulants, antiplatelet agents, NSAIDs, SSRIs, corticosteroids, vitamin E, garlic, ginkgo), previous bleeding symptoms (prolonged bleeding after tooth extraction, menorrhagia, epistaxis, gingival bleeding), and family history should all be questioned; a standardized Bleeding Assessment Score may be used when appropriate. On physical examination, general condition and vital signs are assessed, and the location, number, size, and pattern of ecchymoses are evaluated; large, unexplained ecchymoses in unusual locations (>1 cm, on the back, abdomen, or face) should raise suspicion for an underlying bleeding disorder. Accompanying petechiae, palpable purpura, mucosal/gingival bleeding, hemarthrosis, lymphadenopathy, hepatosplenomegaly, skin/joint hypermobility, and, in pediatric cases, retinal hemorrhage should also be investigated.

Differential Diagnosis

The differential diagnosis includes platelet-related disorders (ITP, bone marrow infiltration, DIC, TTP, HIT, aspirin- or uremia-related platelet dysfunction, Glanzmann thrombasthenia), hereditary/acquired coagulation factor deficiencies (hemophilia A/B, von Willebrand disease, liver failure, vitamin K deficiency, acquired hemophilia), vascular causes (senile purpura, purpura simplex, Ehlers-Danlos syndrome, vasculitides, scurvy, meningococcemia), and medications. Special presentations such as periorbital ecchymosis (neuroblastoma, multiple myeloma, amyloidosis, migraine) and abdominal ecchymosis (Cullen's and Grey Turner's signs) should also be considered.

Diagnostic Approach

Routine imaging is not required; targeted imaging (radiography, ultrasound/MRI, CT, Doppler) is used when trauma, a large hematoma, abdominal trauma, or a vascular pathology is suspected. First-line laboratory tests include a complete blood count, PT-INR/APTT, liver and renal function tests, TSH, and peripheral smear; even if these are normal, advanced investigations—bone marrow biopsy, mixing studies, factor levels, vWF antigen/activity, D-dimer/fibrinogen, antiphospholipid antibodies, or genetic analysis—should be pursued when history and physical examination strongly suggest an underlying disorder.

Conclusion

In approaching the patient with ecchymosis, careful distinction between traumatic and non-traumatic causes, a systematic and detailed history and physical examination, and a stepwise laboratory/imaging strategy are of critical importance. While a simple cause such as “easy bruising” is common, it should not be forgotten that ecchymosis may also be the presenting sign of serious pathologies such as coagulation defects, hematologic and other malignancies, and amyloidosis.

Keywords: Ecchymosis, purpura, bleeding disorder, thrombocytopenia, coagulopathy