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Medically reviewed by Last updated on May 6, 2024.

What is toxoplasmosis?

Toxoplasmosis is an infection caused by parasites. Healthy adults usually do not become ill from this infection. The infection may cause illness in adults with a weak immune system. If you have a weak immune system, toxoplasmosis may damage your eyes, brain, or other organs. Women who are infected during pregnancy are at risk for miscarriage, preterm labor, and having a baby with birth defects.

How is toxoplasmosis spread?

You can become infected if you do any of the following:

What increases my risk for toxoplasmosis?


What are the signs and symptoms of toxoplasmosis?

Most people do not have signs and symptoms of toxoplasmosis. Some people may have symptoms similar to the flu, such as fever, nausea, vomiting, muscle aches or swollen lymph nodes. Toxoplasmosis infection of your eyes may cause blurry vision, red eyes, or pain when you look at light. Toxoplasmosis infection of your brain may cause a headache, confusion, trouble moving, or a seizure. Other symptoms may depend on which organs are affected.

How is toxoplasmosis diagnosed and treated?

How can I manage my symptoms?

How can I help prevent toxoplasmosis?

You may be given medicine to prevent toxoplasmosis if you have a weak immune system.

Treatment options

The following list of medications are related to or used in the treatment of this condition.

View more treatment options

What do I need to know about caring for cats?

Cats and kittens can carry the parasites that causes toxoplasmosis. Do the following to prevent getting toxoplasmosis from cats:

What else can I do to prevent toxoplasmosis if I am pregnant?

You should do all of the above to prevent toxoplasmosis. You should also do the following:

Call your local emergency number (911 in the US) if:

When should I seek immediate care?

When should I call my doctor?

Care Agreement

You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your healthcare providers to decide what care you want to receive. You always have the right to refuse treatment. The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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Learn more about Toxoplasmosis

Treatment options

Symptoms and treatments

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.