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Posted on Sep 21, 2012 in Demodex | 0 comments

Why Humans Have Demodex Mites: hypothesis, clinical findings and reserch on demodex mites

Demodex folliculorum and brevis or what we call them demodex mites which are first discovered on dogs (Demodex canis) that causes hair loss due to low immune system. We also know that human demodex is really not harmful for the exception of outburst infestation on the skin. Due to the reasons that our immune system had decreases its defense, or unsanitary habits that attracts dirt, or a high esteem of hormone levels. These factors have been found proven to trigger demodex infestation on the skin making them harmful rather than an innocent commensal organism naturally found on our skin. With a rate of demodectic infestation could lead to various types of effects on our body, especially on our skin. Knowing the possible effect of such infestation could be a good warning for us to maintain a clean and tidy self being to prevent such infestations.

Hair fall or loss is one of the said manifestations that could occur with demodectic infestation. Although there is no other scientific finding that has proven this theory, most people would relate such hair loss to the infestation. Some say that since Demodex brevis is fond of feeding on the oils secreted by the skin, especially on our face and scalp, it is said that due to the decrease of sebaceous excretion needed by hair follicles to grow results on hair fall. Another hypothesis suggests that due to the acidic enzymes that the facemites use to initially digest their food, it said that it triggers inflammation of the epidermis which in return worsens hair loss. Lastly, since that our immune system would likely to react on such demodectic infestation that it is said that it blocks various nutrition needed by the hair to grow. It is by blocking the food source to lessen the demodex’ reproduction, thus making the hair follicles dull causing it to fall out of the scalp. Though most researchers would only vouch that hair loss due to demodectic infestation can only occur to persons who are already prone or has inherited to baldness.

On another hand, proven clinical findings have been reported to the effects of demodectic infestation on our skin. Chalazion is a type of granuloma inflammation on meibomian glands, the cells assigned to defense it surrounds the infection too huge for macrophages to consume thus resulting to inflammation. Pityriasis folliculorum is another effect of such infestation. It is a dermal inflammation of the affected area. This represents such dry scaly skin or rosacean like lesions caused by demodectic larvae plugs in between the hair follicles which decreases oil flow. Another type of inflammation of hair follicles is chronic folliculitis which is characterized by fungal/viral/bacterial infection caused by demodectic plugs. Various effects is possible to occur on demodectic infestation depending on the level of its severity. Being aware of the possible causes and effects of such is a good way to inform yourself of the next steps needed to control the infestation.

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