Muscles Cysticerci can develop in any voluntary muscle. Invasion of muscle can cause inflammation of the muscle, with fever, eosinophilia, and increased size, which initiates with muscle swelling and later progress to atrophy and scarring. In most cases, it is asymptomatic since the cysticerci die and become calcified. Nervous system The term neurocysticercosis is generally accepted to refer to cysts in the parenchyma of the brain. It presents with seizures and, less commonly, headaches. Cysticerca in brain parenchyma are usually 5–20 mm in diameter. In subarachnoid space and fissures, lesions may be as large as 6 cm in diameter and lobulated. They may be numerous and life-threatening. Cysts located within the ventricles of the brain can block the outflow of cerebrospinal fluid and present with symptoms of increased intracranial pressure. Racemose neurocysticercosis refers to cysts in the subarachnoid space. These can occasionally grow into large lobulated masses causing pressure on surrounding structures. Spinal cord neurocysticercosis most commonly presents symptoms such as back pain and radiculopathy. Eyes In some cases, cysticerci may be found in the eyeball, extraocular muscles, and under the conjunctiva (subconjunctiva). Depending on the location, they may cause visual difficulties that fluctuate with eye position, retinal edema, hemorrhage, a decreased vision or even a visual loss. Skin Subcutaneous cysts are in the form of firm, mobile nodules, occurring mainly on the trunk and extremities. Subcutaneous nodules are sometimes painful.
Cysticercosis
Neurocysticercosis
Granulomatous amoebic encephalitis
Meningeal syphilis
Sappinia amoebic encephalitis
Balamuthia infection
Amoebic brain abscess
Powassan encephalitis