Words to Describe hyperpyrexia

How hyperpyrexia often is described ("________ hyperpyrexia")

• continued
• secondary
• sudden
• hysterical
• heat
• rheumatic
• therapeutic
• acute
• terminal
• postoperative
• mild
• persistent
• moderate
• unexplained
• artificial
• anesthetic
• uncontrolled
• induced
• borderline
• extreme
• true
• dangerous
• slight
• malignant
• marked
• fatal
• basal
• hypertonic
• severe