Twitter Icon Facebook


 DONATE TO VMS


   Anatomy

   Biochemistry

   Boards

   Book Store

   Cardiovascular

   Endocrinology

   Financial Articles

   Gastrointestinal

   Genitourinary

   Gynecology

   Healthy Living

   Hematology

   How to Section

   Infectious    Diseases

   Musculoskeletal

   Neurological

   Nutrition

   Obstetrics

   Pharmacology

   Physical
   Examination

   Physiology

   Psychiatry

   Pulmonary

   Renal

   Rheumatology

   Useful Links

   Home

   Resources for...

 Medical Students

   YouTube

      Google Analytics Alternative

Looking for help with nurse application essay? Visit MyCustomEssay.com and get it written from scratch.

Get custom college essays from https://123writings.com - a writing service for college students.

Ewritingservice.com is the custom writing service thousands of students trust all over the world.



    

    

Enterobius Vermicularis (Pinworm)

About || Signs and Symptoms || Diagnosis || Treatment || Overview ||
Related Articles || References and Resources || Leave a Comment || Search

About





Enterobius vermicularis, better known as pinworm, is a helminth (ie: worm). It is further categorized as a nematode, or roundworm.

Like other worms it has a unique lifecycle that is quite interesting, albeit somewhat disgusting! It begins when an egg is ingested by a human. Eggs are usually ingested because of poor hygiene (ie: not washing your hands after doing number 2) and can sometimes be found in contaminated food. Once ingested the eggs hatch in the small intestine. From there the worms migrate to the large intestine where they mate. For unknown reasons the pregnant females head towards the anus at night where they lay their eggs.

From there they are shed in the feces and potentially picked up by another unlucky host. It is the most common worm related infection in the United States.

Top

Signs and Symptoms

The eggs in the perianal area are extremely pruritic (ie: itchy). Scratching of the anus secondary to the intense pruritis can lead to skin breakdown and potential bacterial super infection. The symptoms are generally most severe at night because this is when the females migrate to the anus to lay their eggs. Systemic signs are generally not present although some patients can have malaise (ie: feeling "crappy").

Top

Diagnosis

The traditional way of diagnosing is the "scotch tape" test. The clinician takes a piece of scotch tape and applies it to the patient's perianal region. Eggs can be seen on the tape once its removed. The best time to perform this test is early in the morning before bathing or at night.

Top

Treatment

Two anti-helminth medications are used to treat pinworm. The first is albendazole. Generally a single dose is enough to kill all worms, but since eggs may be present on clothing, bedding, etc. a second dose is often given two weeks later. Mebendazole is another medication that is also given as a single dose repeated two weeks later. These medications work by inhibiting microtubule polymerization in the cytoplasm of the worm's cells.

Top

Overview

Enterobius vermicularis (aka: pinworm) is the most common worm infection in the United States. It causes an intense itch in the perianal area that is worst at night. It is diagnosed by the "scotch tape" test. Treatment is with albendazole or mebendazole.

Top

Related Articles

- Influenza

- Community acquired pneumonia

- Giardia lamblia

- Borrelia burgdorferi

Top

References and Resources

(1) CaƱete R, Escobedo AA, Almirall P, et al. Mebendazole in parasitic infections other than those caused by soil-transmitted helminths. Trans R Soc Trop Med Hyg. 2009 May;103(5):437-42. Epub 2009 Feb 4.

(2) Stermer E, Sukhotnic I, Shaoul R. Pruritus ani: an approach to an itching condition. J Pediatr Gastroenterol Nutr. 2009 May;48(5):513-6.

(3) http://www.dpd.cdc.gov/dpdx/html/enterobiasis.htm

Top

HTML Comment Box is loading comments...

Top

Search VirtualMedStudent.com

Loading