Epidemiology and etiology

Giardia lamblia (also known as G. intestinalis or G. duodenalis), an enteric protozoan, is the most common intestinal parasite responsible for diarrheal syndromes throughout the world. Giardia is the most frequently identified intestinal parasites in the United States, with a prevalence rate of 5% to 15% in some areas. G. lamblia has been iden tified as the first enteric pathogen seen in children in developing countries, with prevalence rates between 15% and 30%.

Patient Encounter 1: Giardiasis

MK is a 15-year-old high school student who had traveled to Mexico as part of a school group to practice his Spanish language skills. While in Mexico, he was careful not to drink any local water and only consumed warm or heated food and soda. He is seen in the travel clinic with complaints of some "explosive" crampy diarrhea and has had constipation alternating with diarrhea for the last 2 weeks. MK indicates that his stools have been foul smelling.

Are his symptoms characteristic of giardiasis?

How would you differentiate giardiasis from possible

Escherichia coli-induced diarrhea?

There are two stages in the life cycle of G. lamblia: the trophozoite and the cyst. G. lamblia is found in the small intestine, the gallbladder, and in biliary drainage. The distribution of giardiasis is worldwide with children being more susceptible than adults.

Constipation Prescription

Constipation Prescription

Did you ever think feeling angry and irritable could be a symptom of constipation? A horrible fullness and pressing sharp pains against the bladders can’t help but affect your mood. Sometimes you just want everyone to leave you alone and sleep to escape the pain. It is virtually impossible to be constipated and keep a sunny disposition. Follow the steps in this guide to alleviate constipation and lead a happier healthy life.

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