Nogle af symptomerne på dette syndrom er: uforklarlig feber, svedeture, øget hjertefrekvens, diarré, (ukontrollerede) muskelsammentrækninger, kulderystelser, overaktive reflekser, rastløshed, humørsvingninger og bevidstløshed.
Some of the symptoms of this syndrome are: inexplicable fever, sweating, increased heart rate, diarrhoea, (uncontrollable) muscle contractions, shivering, overactive reflexes, restlessness, mood changes and unconsciousness.