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.
Yeast infections in the mouth, also known as thrush, can cause tongue inflammation. Alcohol, spicy foods, or tobacco may irritate the mouth and cause tongue inflammation. Symptoms of tongue inflammation depend on the severity of your condition and the health condition causing it. You may experience problems with chewing, swallowing, or speaking. You may have a sore, tender, or swollen tongue.