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.
Again, he referenced Lichen Planus, and asked I go see an Oral Surgeon to be sure, but he didn't think anything looked cancerous. Still, the metallic taste in my mouth is nuts, and my cheeks seem a bit numb, more on the side where my root canal was performed. I can be somewhat of a hypochondria with my smoking history. I'm 36 years old and scared to death I have Oral Cancer.