Enterobiasis ( pinworms )
Helminthiases / / May 11, 2016
Enterobiasis - a bot, characterized by perianal itching.Distributed everywhere.
Etiology Pathogen Enterobiasis - round worms pinworm Enterobius vermicularis.female Length 9-12 mm, 2-5 mm, male.Egg size 0,050-0,060X0,02-0,03 mm.Helminths are parasitic in the distal small intestine, cecum and colon primary part.The female pinworms after ripening eggs in them descend into the rectum, actively go out of the anus, lay eggs in his circle and die.The males die in the intestine.The life expectancy of pinworms in the human body is not more than 3-4 weeks.
source of infestation is the only person infected enterobiasis.The eggs laid by the females pinworms on the skin of the patient, after 4-6 hours mature, infective larvae develop in them.The maturation of eggs and possibly in the external environment at a temperature of 22 to 40 ° C and 90-100% humidity.They fall on the underclothes and bed linen of the patient, the surrounding objects, carried by flies.Infection occurs by ingestion enterobias
Pathological anatomy and pathogenesis
Pinworms damage the intestinal mucosa, prisasyvayas to her, sometimes penetrating into it.In some cases, they are immured in the thickness of the intestinal wall up to the muscular layer.In the intestinal wall occur petechial hemorrhages and necrosis.
Pinworms are entered bacteria and female sex organs - the vulva, vagina, uterus, fallopian tubes.Hence, they move to the peritoneum, which are formed around the cysts and nodules up to 7 mm in length and a width of 5 mm.
In some individuals, a small number of infested pinworms expressed manifestations of the disease may not be available.In mild Enterobiasis evening at bedtime, the patient there is itching in the perianal region.He kept 1-3 days and then spontaneously disappear, but 2-3 weeks is usually reappears.This frequency of symptoms of itching caused by the change of generations pinworms.As a result of re-infestation of worms dying out generation gives way to the new.
the presence in the intestine of the patient's large number of pinworms and massive re-re-infestation itching becomes permanent and very painful.It violates the patient's sleep and rest.Scratching the anus circle leads to abrasions, secondary bacterial infections of the skin, dermatitis, which further worsens the disease.
Some patients in the foreground are the gastrointestinal disorders - a rapid mushy stools, tenesmus.With sigmoidoscopy often established presence on the mucous membrane petechiae, small erosions, increased vascular pattern.The mucous membrane of the external and internal sphincters irritated.
In severe Enterobiasis often have a headache, dizziness, insomnia, mental and physical fatigue, weight loss, severe symptoms of neurasthenia and psychasthenia.In children, in some cases, it appears bedwetting.Women zapolzaniya pinworms in the genitals leads to a sometimes very severe vulvovaginitis simulating gonorrheal defeat.Described enterobiozny endometritis and pelvic peritoneal irritation as a result of penetration through the female genital tract pinworms.
most characteristic symptom Enterobiasis - perianal itching.However, we must remember that it is observed in other diseases - proctitis and sfinkteritah different etiology, hemorrhoids, rectal cancer, chlamydia, genital trichomoniasis, liver disease and kidney disease, candidiasis, neurodermatitis, diabetes and OE pinworm eggs to be found in the materialreceived at the perianal scrape with a spatula.Female pinworms often be seen on the surface of the stool.
Treatment In milder forms enterobiosis can restrict conduct hygienic measures and formulation of the night enema adults 4-5, children of 1-3 glasses of water with the addition of each glass half teaspoon of baking soda.In severe forms enterobiosis used pyrantel, Vermoxum, Worm.