In most cases, this blood extravasation is evident after a minor or moderate trauma, which damages the small blood vessels, without causing skin lacerations. In the affected area, the bruise manifests itself as a relatively large red-purplish patch that does not disappear under pressure. However, some factors can increase the likelihood that this sign will manifest itself very easily or spontaneously, apparently without any specific cause. Bruises can be found, in fact, in the presence of pathologies and drug therapies that determine:
- Excessive fragility of the vessel wall;
- Alterations in coagulation capacity;
- Reduction in the number of platelets.
The bruise is typically associated with local pain, swelling, tingling and numbness, sometimes followed by an annoying tension of the affected area. Depending on the specific etiology, then, other disorders may occur, such as, for example, itching and sense heat.
The clinical characteristics of the bruise and the onset of this in relation to other symptoms are important aspects for the differential diagnosis. Therefore, if this sign is recurrent or persists more than necessary, it is important to contact a doctor for appropriate diagnostic investigations. Normally, a bruise tends to resolve spontaneously within a few days, but some remedies can be used to speed up the healing process.
) to diseases that involve the whole organism (haematopathies, neoplasms, liver diseases, etc.), sometimes even potentially fatal. In most cases, the bruise results from a trauma that has not damaged the skin (bump, contusion, etc.) .
