Hm. In that case I wonder if it could have been a panic attack.
http://en.wikipedia.org/wiki/Panic_attack#Symptoms
http://en.wikipedia.org/wiki/Limited_symptom_attack
Panic attacks often have many of those same symptoms, and last for around ten minutes. A Limited Symptom Panic Attack could definitely satisfy the requirements of having a sudden onset of what feels like fever, sweating, hot flashes, increased heartrate, feelings of confusion, and then a just as sudden disappearance of these as the adrenal system returns to equilibrium.
You'd really have to speak to a doctor to get a good idea of what it was and what could have triggered it, if it was a panic attack.