Can A High Fever Cause Delirium?

Can A High Fever Cause Delirium? Can a high fever cause delirium? There are many causes of delirium, including: Underlying illness or infection. Medications. High fever. How high of a fever is Delirious? Symptoms of a fever may include sweating, shivering, headache, muscle aches, dehydration and general weakness. A high temperature (between 103 and 106)