A 25-year-old female presents with double vision and unsteady gait. She had Lyme disease four months ago. What could be the diagnosis, and what are the next steps?
This patient's symptoms suggest the possibility of neurologic complications from Lyme disease, which could manifest as cranial neuropathies (potentially causing double vision) or meningitis (potentially causing unsteady gait). A detailed neurologic examination should be conducted, and further investigation, such as neuroimaging and possibly lumbar puncture, should be considered. If these symptoms are indeed related to Lyme disease, the patient would typically be treated with a course of intravenous antibiotics.