Reversible corticospinal tract hyperintensities in neurologic Lyme disease.

A 60-year-old man presented with an ataxic and spastic gait with paraparesis, having reported a tick bite. Brain MRI depicted bilateral corticospinal tract hyperintensities (figure). He had a mild lymphocytic meningitis (12 leukocytes/mm, proteinorachia 1.48 g/L). ELISA was positive for Lyme disease in serum (immunoglobulin G [IgG] 176 UI and immunoglobulin… CONTINUE READING