THE ULTIMATE ITEMDEX
WHAT IS AN ITEMDEX
In Pokemon you will find various items, like Golden Scarfs and other items like so. The Itemdex contains all (or most) of the items that you can find during your adventure of pokemon. The items may sometimes only can be found in a certain generation of the game. Some items are released over the generations, for example in Pokemon X/Y they released an item called Venusaurite to evolve Venusaur into a mega Venusaur, you can only do this in the new Generation VI pokemon, and you won't be able to do this in Generation V or lower.
ITEMDEX seperates different types of items. For example TMs and HMs. Both of them make the pokemon learn a new move. TMs usually in the olden generations dissapear once you use them. However HMs do not dissapear after you use it. HMs have an unlimited amount of use in the game. Meaning that every single pokemon can learn the same move using a HM (however I do not recommend that). Below is a list of Item Categories you may find during the game.