A brief sudden change in a normally constant quantity: a pulse of current; a pulse of radiation. b. Any of a series of intermittent occurrences characterized by a brief sudden change in a quantity.
Some pregnant women experience a metallic taste in their mouth during the early stages of pregnancy, because of the hormone changes. It's also fairly common to crave certain foods, or go off certain foods, and have a heightened sense of smell. Learn more about the signs and symptoms of pregnancy.
Itching or burning, Metallic taste in mouth, Soreness or burning inside of mouth, Strange smell or taste. Bad taste in mouth, Strange smell or taste, Taste of acid in mouth, Unusual taste in mouth.