Keep away from sand.
First do you mean, What makes the person itchy when a jellyfish stings you?. Well what i think is that the venom in it.
Allergies
the fabric.
Itchy spots.
if you are itchy you fell it so yeah
Fleas
Anything you may be allergic to.
yes it stings like fire
grass does make most people itchy because the grass has weird stuff on its leaves and spreads through ur skin witch makes u sups itchy
no ,because it can go into their nostrils and eyes.besides it will make the fur itchy,rough and uncomfortable.
sand makes glass and glass make sand its a reverse psychology :)
sometimes i think it makes u itchy