A 30 years old primi gravida at 15 weeks of gestation presented with high grade fever and altered sensorium for 3 days.
She gives history of hyperemesis gravidarum and poor oral intake for 2 months.
Her core temperature in the emergency department was 109 F. Her heart rate was 149 / min and blood pressure was 100/70 on 10 mcg/min of noradrenaline.
What are your differentials?