Vegetable, also known as Veggie for short, is a relative of the disease "fruit", except that the sympton is having an itch every once in a while. There are 3 cases worldwide.
The first possible case is having an itch that goes away when you scratch it. The second case is having an itch which you can't figure out the location of, and, therefore, end up scratching all over the place and yet can't find the itch. The third possible case is an itch that gets worse as you scratch it so you have to leave it alone.
The second possible case is considered to be the worse case. However, there are no known unhealthy effects from Vegetable.