Shoot off to the ER. That's my opinion. Death is forever.
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With a history of fever, rash, neck stiffness, there is every possibility a meningitis or infection of the coverings of brain. Caregiver is right! Rush to the ER. A spinal tap must be done immediately and you should be hospitalized.
Hope this helps. Please let me know if there is any thing else and do keep me posted. Take care!