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.
Common conditions that can impair your sense of taste include a stuffy nose due to allergies or the common cold, a sinus infection, and certain medications. A metallic taste during pregnancy is a fairly common complaint as well. Health Stories: Read how this real patient found the right care.