Definition & Etiology
Definition
Bruising: Discolouration of skin due to extravasation of blood into tissues
- Petechiae: <4mm
- Purpura: 4-10mm
- Ecchymosis: >10mm
Prevalence
- Most results from trauma
- Think about non-accidental injuries & safeguarding children
Etiology
Four main categories:
- Vascular disorders
- Platelet disorders
- Coagulation disorders
- Drug-induced: alcohol, corticosteroids, anticoagulants, antiplatelets, NSAIDs, SSRIs, SNRIs