Toxoplasmosis: Symptoms & Signs

Medically Reviewed on 9/10/2019

Toxoplasmosis is an infection with a protozoan parasite known as Toxoplasma gondii.

People infected with toxoplasmosis may not develop any symptoms. Others may develop symptoms and signs that include flu-like symptoms such as fatigue, fever, chills, headache, and muscle aches. Associated symptoms can include the enlargement or swelling of lymph nodes. If a pregnant woman develops toxoplasmosis, the infection may be passed to the unborn baby. Birth defects including brain damage and eye defects may occur in the developing baby in some cases.

Causes of toxoplasmosis

The infection usually develops after contact with cats and/or cat feces. Consumption of raw or undercooked meat is another possible cause. Blood transfusion or organ transplantation from an infected person can also spread the infection.

Other toxoplasmosis symptoms and signs


Bowel regularity means a bowel movement every day. See Answer

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Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.