Disease Report on Scabies

Disease Report on Scabies

The causal agent of the scabies is sarcoptes scabiei var.hominis. The human itch mite is in the class arachnidan family Sarcoptidae, subclass Acari. The mites burrow under the epidermis of the skin, and never go below the stratum corneum. Other races of scabies may cause infestations in other animals of which humans may contact with a temporary itching due to dermatitis; but they do not multiply in the human host. (http://www.cdc.gov/scabies/)

The history of scabies was written in a letter written by Dr.Giovan Cosimo Bonomo to Francesco Redi2 on July 18, 1687, is the first accurate description of the mite with a very accurate drawing of its appearance. In this letter, Bonomo stated that the sarcoptes scabiei could be transmitted by direct contact, and it stuck to almost everything, including fomites. This marked the first time that a microscopic organism could be the cause of the disease.

(http://www.dermato.med.br/hds/bibliography/1998giovan-cosimo-bonomo.htm)

The life cycle of the scabies undergoes four stages. Females deposit three to four eggs per day under the skin. These eggs will hatch in three to four days. These larvae move to the skin surface and burrow into the stratum corneum to construct molting pouches. The larval stage emerges from the eggs and has three pair of legs. After the larval molt, the resulting nymphs have four pair of legs. This form molts into slightly larger nymphs before molting into adults.

Identification of the scabies is a skin rash with severe itching, especially at night, is the most common symptom. Visually, the skin will have papules. Itching and rash may affect much of body, or be limited to more common sites such as between the fingers, on the wrists, waist...

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... very interesting project for me, and now my curiosity is satisfied about the scabies. Up until now, all I knew was that it was a skin infection with intense itching.

Works Cited

http://www.cdc.gov/scabies/

CDC’s Parasitic Diseases A-Z.

Division of Parasitic Diseases, National Center for Zoonotic, Vector-Borne,

Parasites and Health

Scabies (Sarcoptes scabiei)

http://www.dermato.med.br/hds/bibliography/1998giovan-cosimo-bonomo.htm

International Journal of Dermatology 1998; 37(8):625-630

Duke, James A. The Green Pharmacy Herbal Handbook

Rodale Books, 2000: 100-106.

http://www.cdc.gov/scabies/

CDC’s Parasitic Diseases A-Z.

Division of Parasitic Diseases, National Center for Zoonotic, Vector-Borne,

Parasites and Health

Scabies (Sarcoptes scabiei)

http://www.dermato.med.br/hds/bibliography/1998giovan-cosimo-bonomo.htm