Not really...
It depends on how high the fever is...
If its just like 102-103... then it would be uncommon...
but if its 103-104... it could happen...
if you have hyperpyrexia(104-108)... then heck yes... its very common...
along with other symptoms...
anything past 108... and you be seeing Jesus... cause chance are... you're dead...
hahahaha
So if you have like 102-103... then don't be to overly alarmed at hysteria and delusions...
just try and keep the fever down... so you don't trip balls and go crazy or something...
^_^
(tripping balls... ha its a funny term.)