Sorry about the lack of cases this week! I haven't had consistent internet access. I've been doing some hiking and backpacking across South New Zealand. In doing so, we see a lot of warning signs about this disease:
A 30 year old camper is on a multi-day trek in the woods. After coming out, he goes to the emergency department complaining of headache, malaise, nausea, and dizziness. He is a little bit confused. His lips and skin are a bit flushed. Even after he recovers, he has variable degrees of cognitive deficits, personality changes, and movement disorders. His basic vital signs are normal, but you make the diagnosis based on a blood test.
Challenge: What's the diagnosis?
Image is in the public domain, from Wikipedia.