Ascaris is slender as a line, with smooth surface and nothing protruding, and because it is solid inside, it can be called a cylinder. Earthworms have many segments on the surface, which can be regarded as hollow, so it is called a cylinder.

Ascaris lumbricoides is the largest parasitic nematode in human intestine, with pink or yellowish adults, horizontal stripes on the body surface, and the tail of male worms is often curled. Ascaris lumbricoides is a worldwide distribution species and the most common parasite in human body. The infection rate can reach over 70%, which is higher in rural areas than in cities, and higher in children than in adults.

Extended data:

Ascaris influence

1, a small number of adults parasitic in the small intestine have little effect on pregnancy.

2, a large number of adult parasites in the intestine, can cause malnutrition in pregnant women, affecting fetal growth and development.

3, swallowing a large number of infectious eggs in a short period of time with serious infection may lead to ascaris hemorrhagic pneumonia, hemoptysis and dyspnea, which may lead to intrauterine asphyxia and developmental retardation.

4. Pregnancy complicated with biliary ascariasis, intestinal perforation, peritonitis, appendicitis and liver abscess can all lead to abortion, premature delivery and stillbirth.

5, pregnancy complicated with ascariasis complicated with serious infection, maternal and fetal mortality increased.

6. The decrease of gastric acid during pregnancy, the displacement of intestinal tract caused by the enlarged uterus, and the increase of intestinal peristalsis induced by strong contractions during childbirth can all promote the ascaris retrograde to the bile duct. Sudden onset, severe paroxysmal colic in the right upper abdomen, drilling-like feeling, patients tossing and turning, nausea, vomiting, can spit out ascaris. There is no pain or only slight pain between attacks. Ascaris can cause ascaris liver abscess if it gets into the liver.

anthelmintic treatment

Commonly used anthelmintics include mebendazole (Anleshi), albendazole (Intestinal Insect Clearing), levamisole (Drosophila), piperazine citrate (Drosophila, Liuyi Baota Sugar). See commonly used anthelmintics for details. Because the parasitic survival time of ascaris lumbricoides in human body is generally about one year, if reinfection can be avoided, ascaris lumbricoides can "self-heal" in about one year.

Baidu Encyclopedia-Ascaris