To the Editor.
—Scharf has provided an excellent summary of one hospital's experience with a large number of patients with neurocysticercosis.1 Although cerebrospinal fluid (CSF) abnormality was mentioned in the report, CSF eosinophilia was omitted. Since cysticercosis is one of the most common causes of CSF eosinophilic pleocytosis, the documentation of CSF eosinophilia is an important laboratory finding.2 The following two cases, however, serve to indicate that CSF eosinophilia may not be present when the patient has acute neurologic symptoms, but occurs as the neurologic symptoms are improving. It is possible that Scharf has observed a similar experience with "late-onset" CSF eosinophilia, and so chose to omit this as a significant diagnostic finding.
Report of Cases.
—A 50-year-old man, who emigrated from Mexico, was evaluated for headache and tonic-clonic (grand mal) seizure. The neurologic and general examinations were normal, except for nuchal rigidity. An electroencephalogram showed