This week, in the American Journal of Pathology, two San Francisco doctors offer an unexpected reply: the clot forms as the result of a reaction between arterial blood and material from a diseased ...

A skin abscess is a painful, pus-filled bump caused by bacteria like Staphylococcus aureus entering the skin through cuts or nicks. You’re at higher risk if you have diabetes, a weakened immune system ...

An anal abscess is a collection of infected fluid, or pus, around the rectum or anus. Symptoms include pain, inflammation, constipation, and a discharge of pus. Share on Pinterest PER Images/Stocksy ...

An anal abscess, also known as a perianal or rectal abscess, occurs when a cavity in the anus becomes filled with pus. Symptoms may include pain, constipation, or fever. Treatment may include drainage ...