The clinical course is usually insidious and chronic. The symptoms, requiring several years to develop, depend upon the exact location of the larvae or coenurus. If the coenurus enters the brain, meningeal symptoms may include headache, transient hemiparesis, and epileptiform seizures, increased intracranial pressure, and a loss of consciousness. The full-blown syndrome is a space-occupying lesion. In the eye, the coenurosis takes on either an intraocular or orbital form which occurs in the subconjunctival space, eyelids, or extrinsic muscles. The symptoms are blurred vision or diplopia. The rare species, T. brauni, T. serialis, and T. glomerulus cause subcutaneous and muscle infection. When the coenurus develops in muscle tissue a painful nodule often results. Subcutaneous coenurosis produces a nodule similar to the one in muscle tissue, but this one tends to be painless. These nodules are usually to be smaller than 6 centimeters in diameter and are most commonly located in the truck although they can also be found in the neck, head or limbs. Systemic allergic symptoms have also been reported in a case of coenurosis of the breast.

MRI of a brain containing a cyst. Image taken from University of the Free State