US President Joe Biden celebrated the confirmation of 235 federal judges but a mysterious purple bruise on his hand drew widespread attention and speculation about his health online. The bruise ...

Large, bruise-like lesions that look purplish red on light skin and brownish black on dark skin occur. There may also be swelling that begins in the hands and feet and progresses to the arms and legs.

Mosquitoes are perhaps best known for leaving behind small, red bumps that are extremely itchy. Sometimes, these bumps may also darken, creating a bruise-like appearance. As with hornets and wasps ...