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Posted on Sep 21, 2012 in Demodex | 0 comments

Demodex Types that Only Affect Men and Women but Avoid Dogs, Cats and other Pets

As we all know mites are everywhere. These small parasitic organisms can live simultaneously with us without us knowing their presence until their population has fully spread out to cause serious illness or diseases. But some mites are living with us since birth which is completely normal and they are rather widespread for everyone to have it on a daily basis. These mites are called Demodex or face mites for humans. The mites are first known and discovered on dogs and other house pet that causes them to lose their hair and lowers their immune system. In humans, there are two types of mites locally found on our skin, namely Demodex brevis and Demodex folliculorum. These facemites are considered normal organisms or fauna of our skin. They are also considered as commensal organisms under normal conditions which are not harmful for us. But for heavy infestations of the face mites it could be very harmful. A heavy outbreak of demodex mites arrives at puberty wherein their food sources increases. Adult’s hair follicles are normally infested and men are more likely to have infestations than women.

Demodex came from a Greek word meaning fat worm. Demodex came from the order Acarina Phylum Arthropoda. One of the human facemites is Demodex brevis which has a fewer difference with Demodex folliculorum. The only difference they have is that D. brevis is found on oil glands or sebaceous glands near the hair follicles of the skin. They reproduce the same way as D. folliculorum does. Demodex folliculorum on the other hand resides on the hair follicles of the skin near the oil glands. D. folliculorum was first discovered before D. brevis by a Frenchman in earwax. Some says that D. folliculorum, in serious cases, can manifest hair loss.

Human Demodex or facemites are microscopic, transparent to semitransparent, with four pairs of scaled legs near to their pin like mouth. They can live for almost a month on our skin. The female demodex can lays about two dozens of eggs twice a month. They are nocturnal, which makes them feed underneath the hair follicles or oil glands on the day and crawls on the surface of the skin to mate. They would lay their eggs within the hair follicles or oil glands. It takes about a week for the eggs to mature. It is pushed upwards towards the surface opening of the hair follicle where they fully mature and be ready to mate.

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