How many phobias are there in the world?

There are more than 100 phobias in the world. 

Example of one phobia:-

Hydro phobia, scared of water. 

If it's a smaller child or infant, place one on the middle of the chest and on the child's back. (if it is a bigger child with enough room for two, place one on the upper right/your left of the chest, and one on the lower left/your right) the pads should never touch each other.