Fur on kittens paw missing

I just noticed that there's a spot of missing fur on my kittens paw, i haven't called my vet yet because i didn't know if it was something to be concerned about or not! Anyone else experience this? 

Not certain.  There are any number of things that it could be, from the very simple (a scrape) to the very complex (skin disease of some sort).  Have you check for fleas?  New diet?

Your kitten looks young, and should be due for shots soon?  Have the vet look at it then, if there are no changes.  If it gets bigger, call them.  Offer to send the picture to them, or to bring the kitten in.

Best of luck!  It is SO worrying when our babies aren't in purrfect health!