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The pinworm (Genus Enterobius) is a parasitic roundworm of the phylum Nematoda. threadworms (Edna and Phylis), mm markings This image has been released into the public domain by the copyright holder, its copyright has expired, or it is ineligible for copyright. ...
Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ...
Animalia redirects here. ...
Classes Adenophora Subclass Enoplia Subclass Chromadoria Secernentea Subclass Rhabditia Subclass Spiruria Subclass Diplogasteria The roundworms (Phylum Nematoda) are one of the most common phyla of animals, with over 20,000 different described species. ...
This article needs to be wikified. ...
Families Rhabditida is an order of free-living microbivorous nematodes (roundworms) living in soil. ...
A parasite is an organism that lives in or on the living tissue of a host organism at the expense of it. ...
Classes Adenophorea Subclass Enoplia Subclass Chromadoria Secernentea Subclass Rhabditia Subclass Spiruria Subclass Diplogasteria The roundworms or nematodes (Phylum Nematoda from Gr. ...
Classes Adenophora Subclass Enoplia Subclass Chromadoria Secernentea Subclass Rhabditia Subclass Spiruria Subclass Diplogasteria The roundworms (Phylum Nematoda) are one of the most common phyla of animals, with over 20,000 different described species. ...
Forms of worm
The best known is the human pinworm, also known as the threadworms Enterobius vermicularis and the more recently discovered Enterobius gregorii. The adult pinworm male is 1–4 mm in length, while the adult female is 8–13 mm and possess the long, pin-shaped posterior end for which the worm is named. The human pinworm is commonly found in children. The pinworm Enterobius gregorii is a parasitic roundworm of the phylum Nematoda. ...
A millimetre (American spelling: millimeter, symbol mm) is an SI unit of length that is equal to one thousandth of a metre. ...
Habitat The pinworm lives in the lower part of the small intestine, and the upper part of the colon. It is found worldwide and causes the common infection enterobiasis in humans. Unlike many other intestinal parasites, the pinworm does not usually enter the bloodstream or any other organs besides the intestines. Only in rare cases disoriented pinworms can be found in the vagina, and even more rarely in the uterus, fallopian tubes, liver and peritoneum; but the worms cannot survive long in these places. In biology the small intestine is the part of the gastrointestinal tract (gut) between the stomach and the large intestine. ...
For the article about the punctuation symbol, see Colon (punctuation). ...
Enterobiasis is the medical condition of being infected with pinworms (Enterobius vermicularis). ...
Intestinal parasites are parasites that populate the gastro-intestinal tract. ...
Red blood cells (erythrocytes) are present in the blood and help carry oxygen to the rest of the cells in the body Blood is a circulating tissue composed of fluid plasma and cells (red blood cells, white blood cells, platelets). ...
The vagina, (from Latin, literally sheath or scabbard ) is the tubular tract leading from the uterus to the exterior of the body in female placental mammals and marsupials, or to the cloaca in female birds, monotremes, and some reptiles. ...
The uterus or womb is the major female reproductive organ of most mammals, including humans. ...
The Fallopian tubes, also known as oviducts, uterine tubes, and salpinges (singular salpinx), are two very fine tubes leading from the ovaries of female mammals into the uterus. ...
The liver is an organ in some animals, including vertebrates (and therefore humans). ...
In higher vertebrates, the peritoneum is the serous membrane that forms the lining of the abdominal cavity - it covers most of the intra-abdominal organs. ...
Reproduction
 Pinworm eggs are easily seen under the microscope. After mating, the male dies. The female migrates to the anus and emerges, usually during the night, to deposit about 10,000 to 20,000 eggs in the perianal area (around the anus). She then secretes a substance that causes a very strong itching sensation, inciting the host to scratch the area and thus transfer some of the eggs to the fingers. Eggs can also be transferred to cloth, toys and the bathtub. Once ingested orally, the larvae hatch and migrate back to the intestine, growing to maturity in 30-45 days. The eggs can survive from 2 to 3 weeks on their own outside of the human body. It is also in some cases where the larva will hatch around the skin of the anus and travel back inside the anus, up the rectum and back into the intestines where it matures. (SOURCES: Rudolph's Pediatrics - 21st Ed. 2003; Current Medical Diagnosis & Treatment - 45th Ed. 2006) Image File history File links Pinworm_eggs. ...
Image File history File links Pinworm_eggs. ...
Female Human Anatomy Male Human Anatomy This article is about the bodily orifice. ...
In most birds and reptiles, an egg (Latin ovum) is the zygote, resulting from fertilization of the ovum. ...
An itch (Latin: pruritus) is a sensation felt on an area of skin that causes a person or animal to desire to scratch that area. ...
A larva (Latin; plural larvae) is a juvenile form of animal with indirect development, undergoing metamorphosis (for example, insects or amphibians). ...
Effects Except for itching, pinworm infestation does not usually cause any damage to the body. Sleep disturbance may arise from the itching or crawling sensations. Some case reports suggest that severe infestation may be associated with an increased risk for appendicitis. There is also some evidence of an association between enterobiasis and diminished zinc levels. Appendicitis (or epityphlitis) is a condition characterized by inflammation of the appendix[1]. While mild cases may resolve without treatment, most require removal of the inflamed appendix, either by laparotomy or laparoscopy. ...
Enterobiasis is the medical condition of being infected with pinworms (Enterobius vermicularis). ...
Diagnosis Diagnosis is often made clinically by observing the female worm (or many worms) in the peri-anal region, but can also be made using the "scotch-tape" test, in the course of which the sticky side of a strip of cellophane tape is pressed against the peri-anal skin, then examined under a microscope for pinworm eggs. A enterobiasis tape test or transparent adhesive tape test (sometimes called a Scotch tape test) refers to a method used for collecting and examining material gathered from regions surrounding the anus. ...
Treatment Anti-pinworm drugs such as Albenza (albendazole) or Vermox (mebendazole) are commonly used to treat pinworms. It is not a necessity to visit a doctor to get these drugs, as they are commonly available as over the counter medications; ask a pharmacist for medicines to treat pinworms (or threadworms as they are known in the UK). These medicines kill the pinworms 95% of the time, but do not kill the eggs. The person being treated may have to return after a time of two weeks to be re-treated. Another precaution towards treating the eradication of pinworms is to wash hands before eating (to prevent any pinworm eggs under fingernails from being ingested) and to wash any area or clothes that have touched or been in the vicinity of the infected areas. Treating the entire family is often necessary for cure. Albendazole marketed as Albenza or Zentel, is indicated for the treatment of a variety of work infestations. ...
Mebendazole (brand name Ovex®, Vermox® or Pripsen®) is a drug used to combat pinworms, roundworms and hookworms. ...
References New England Journal of Medicine Video. A 55-year-old man presented with intermittent, crampy pain in the right lower quadrant of the abdomen. A colonoscopy was ordered and revealed multiple mobile 1-cm worms, Enterobius vermicularis, in the cecum.
The Human Pinworm: The human pinworm Enterobius vermicularis is a ubiquitous parasite of man, it being estimated that over 200 million people are infected annually. It is more common in the temperate regions of Western Europe and North America, (it being relatively rare in the tropics) and is found particularly in children. Samples of Caucasian children in the U.S.A. and Canada have shown incidences of infection of between 30% to 80%, with similar levels in Europe.
External links - Video of infected colon
- Endoscopic video of a pinworm slithering around the small intestine.
- Fredworm site
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