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The passage of blood from ruptured blood vessels into subcutaneous tissue, marked by a purple discoloration of the skin.

[New Latin, from Greek ekkhumōsis, extravasation, from ekkhumousthai, to extravasate : ek-, out; see ecto- + khumos, juice; see gheu- in Indo-European roots.]

ec′chy·mot′ic (-mŏt′ĭk) adj.
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The nasal mucosa was ecchymotic, with dried dark blood.
Petechial and ecchymotic rashes were seen on the limbs and trunk.
Physical examination revealed swollen, ecchymotic, and deviated circumcised penis without blood at the meatus (Fig.
With ecchymotic KS, on the other hand, the intradermal KS proliferation is accompanied by extensive red blood cell extravasation (purpura effect), often so marked that it almost obscures the underlying histologic features of KS.
Red and purple, slightly firm, irregularly shaped ecchymotic patches varying in size were observed below the knees of both legs (Figure 1).
In a psychiatric or subjacent psychosomatic disorder context, it is a clinical profile characterized by atraumatic painful ecchymotic lesions.