Many would probably feel itchy after watching the video below – scroll down if you can’t wait to watch it.
Scientist have discovered more than 48,000 species of mites. At least two species live all over human, highest concentration being on our faces – Demodex folliculorum (bigger, round-bottomed) and Demodex brevis (smaller, short-bottomed).
The mites were discovered in 1841, but only properly described a year later by German dermatologist Gustav Simon. He was looking at acne spots under a microscope when he noticed a “worm-like object” with a head and legs.
A year later, Richard Owen gave the mite its name, from the Greek words ‘demo’, meaning lard, and ‘dex’, meaning boring worm, hence Demodex folliculorum and Demodex brevis
These mites live in our hair follicles, buried head-down, eating the oils we secrete, hooking up with each other near the surface, and occasionally crawling about the skin at night – that’s explained the itchiness.
Demodex found in every human on earth today – white Europeans, Asian, Australian aborigines to Devon Island Eskimos.
Although they are common, we know very little about them – how do we get them, or how many other face-mites exist. Each Demodex species seems to stick to one mammal host, and humans, dogs, and cats all have more than one.
[ via National Geographic ]