Have you ever notice an extra tiny hole in someone else ear? Have you ever ask yourself what is it for? Well, that little hole is called preauricular sinus which is also known as a preauricular cyst, preauricular pit or preauricular fissure. This is a congenital case which some people have.
Neil Shubin, an evolutionary biologist speculated that this tiny hole is an "evolutionary remnant of fish gills" but it was not scientifically proven.
This congenital disorder was first reported way back 1864, according to the US National Library of Medicine. It was even found out that this disorder is hereditary and can manifest in the early stages of fetal development.
According to the online health source Medscape, "These tiny holes in the ear are located near the front of the ear and mark the entrance to the sinus tract that may travel under the skin near the ear cartilage."
A preauricular sinus is harmless, but it can become infected. The Children's Hospital of Philadelphia said that the "main problem with preauricular pits is that they can lead to benign cysts or infections. These include small puss-filled masses known as abscesses."
Doctors recommend surgery for such chronic infections and taking of antibiotics for mild cases.
The study also shows that not all people have this kind of tiny holes in the ears. Most people who have this preauricular sinus are Africans and Asians. This can be found in the external part or inner part of the ear.
Korean Journal of Audiology revealed that 4 to 10 percent of the Asian and African people have preauricular sinus while United State has the lowest case having only 0.1 percent.