6Diagnosis
Those people who previously have fever blisters would notice a recurrence simply. If parents suspect that their children might have a primary infection, particularly when the blisters have not healed after 10 days, make sure to visit the doctor. Some typical symptoms and signs are often obvious enough for the doctor to diagnose the condition. However, a blood test might be needed to confirm the presence of the virus. Similarly, a fluid sample from your blisters can be taken and analyzed. These tests are only done on people with compromised immune systems due to HIV/AIDS or chemotherapy. [6]
