What is a significant symptom of a Giardia lamblia infection?

A significant symptom of a Giardia lamblia infection is diarrhea. Giardia lamblia, a protozoan parasite, is well-known for causing gastrointestinal disturbances, primarily manifesting as acute or chronic diarrhea. This diarrhea can be watery and may be accompanied by abdominal cramps, bloating, and gas.

The primary way Giardia interferes with nutrient absorption in the intestines is through attaching to the intestinal lining, which disrupts normal digestion and absorption processes, leading to the characteristic symptoms. While some other symptoms may accompany Giardia infections, such as nausea or fatigue, diarrhea is the hallmark symptom that is most commonly associated with this particular parasitic infection.

The other symptoms listed, such as hemorrhagic fever, severe headache, and skin lesions, are not typically linked to Giardia lamblia infection, as they are manifestations of other health conditions or infections that do not relate to the gastrointestinal effects of Giardia.