• Symptoms

    Most often, the worms stay in muscles and do not cause symptoms.

    Symptoms that do occur depend on where the infection is found:

    • Brain lesions can result in seizures or symptoms similar to those of a brain tumor.
    • Eye lesions can cause decreased vision or blindness.
    • Heart lesions can lead to abnormal heart rhythms or heart failure (rare).
    • Spine lesions can lead to weakness or changes in walking.

    Signs and tests

    Tests that may be done include:

    • Blood tests to detect antibodies to the parasite
    • Biopsy of the affected area
    • CT scan, MRI scan, or x-rays to detect the lesion
    • Spinal tap (lumbar puncture)