Category ratings defined. Test instruments are rated on their ability to withstand a voltage spike, which is applied through a specified level of resistance (Table). The ratings are broken down by categories â CAT I, II, III, and IV.
Burning Mouth and Tongue. Burning tongue is an odd sensation in the tongue and mouth that most commonly affects women who are entering or going through menopause. Though researchers are not sure what causes it, several suspects include irritating dentures, nerve damage, or hormonal imbalances.
Thrush or an oral yeast infection during pregnancy may cause a painful itch on your tongue or elsewhere in your mouth. Treatment for Itchiness of the Tongue The proper treatment for your burning, itchy or tingling tongue will depend on what is causing it.