Snails and Slugs learn more about names for this taxon. Scientists aim to describe a single 'tree of life' that reflects the evolutionary relationships of living things. However, evolutionary relationships are a matter of ongoing discovery, and there are different opinions about how living things should be grouped and named. EOL reflects these differences by supporting several different scientific 'classifications'. Some species have been named more than once.
Causes of Ear bleeding that are uncommon. The following causes of Ear bleeding are diseases or conditions that affect more than 200,000 people, but less than 1 million people in the USA: 1  Face fracture - Bleeding from the ear.  more causes...Â».
The Eustachian tube also drains fluid out of the middle ear. When this tube becomes blocked, and air and fluid cannot flow freely, pressure builds in the ear, causing pain. If fluid behind the eardrum becomes infected with a virus or bacteria, it causes a middle ear infection that can lead to pain and fever. Other causes of pain related to the ear include: Injury. Inflammation and infection in the ear canal (the channel between the eardrum and the outside part of the ear).