In some provinces, pharmacists could also diagnose.
When tests are conducted, a scraping may be taken from a blister using a swab. This can take several days, but will confirm the HSV on the fluid. Blood tests are another method of diagnosis that may be used when accuracy is important. These tests are not common procedure, however, and are generally reserved for special circumstances such as when a patient has a weakened immune system.
When should I see my physician?
Generally cold sores resolve without too much trouble over a period of 7 to 10 days without treatment, even for susceptible patients who tend to have recurrent cold sore outbreaks. Some good reasons to see a doctor include: