A rider on a BMW motorcycle tour through Peru described battling severe altitude sickness and hallucinations after failing to acclimatize to high elevations.
The traveler fell ill after flying from sea level to 4,000 meters and riding even higher without taking altitude medication. Symptoms included sweating, hallucinations, and disorientation during the return from Machu Picchu, leading to a Jeep ride back to Cuzco where a doctor prescribed treatment. The motorcycle, a BMW F 750 GS, guided the rider safely for two and a half days by following another bike's taillight until recovery.
