An acute or recent subungual hematoma presents as a painful red discoloration of the nail plate; often there is a known history of trauma to the affected digit. In contrast, a chronic or older ...

Bruises, also called contusions, appear as red, brown, bluish-purple blemishes on one's skin. They occur when small blood ...

The leg looked swollen and the tips of the toes started to show dark discoloration (Fig ... but multiple bacteria and a few white and red blood cells were evident on the slide.