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.
A metallic taste in the mouth is a relatively common side effect of medications. Dozens of different medications produce an altered sense of taste that can include the perception of a metallic taste.Examples include many antibiotics and some antihistamines. metallic taste in the mouth is a relatively common side effect of medications. Dozens of different medications produce an altered sense of taste that can include the perception of a metallic taste.