PLE-4776

A 16-year-old male student in a dormitory presented with increasing daytime sleepiness, irritability, and headache. The patient was noted to have nuchal rigidity and fever over the past 2 days. After a course of 8 hours, the patient was noted to have purpuric rashes from the trunk extending to the lower extremities. Which of the following findings in the patient infers a better prognosis in terms of this disease?