fever, severe headache, nausea, and vomiting. As the tissue covering the brain and spinal cord (the meninges) becomes infected and swollen, the patient will develop a stiff and painful neck.
The most common symptoms are confusion, agitated behaviors (such as thrashing, grasping, strking out at staff), visual hallucinations and headache pains.
As the condition progresses, repetitive and ritualistic behaviors, such as hand rubbing or clapping, develop. Hyperoral behaviors are often associated with this phase, and may include overeating