Hi Ricardo, Chiari symptoms cycle....so for you to have some good days and then some days that are worse is not uncommon.
And Chiari does not typically come alone....there are related conditions.....and many times the symptoms we have are difficult to know which condition they are from...and they are similar symptoms as well.....
You definitely need to have more testing you will want a true Chiari specialist to help you as they know about related conditions....so also educate yourself on ALL of them so you will know when you have the right Dr.