In most cases, fever blisters are self-limiting. They will usually crust over and go away in about 2 weeks. If they last longer, the healthcare professional should be consulted. Treatment for oral herpes includes the following:
Antiviral medications may cause nausea, vomiting, diarrhea, and allergic reactions. Creams and ointments may cause an allergic reaction in some individuals.
The sores usually clear up and go away in about 2 weeks. If they last longer than this or if they come back often, the healthcare provider should be consulted.
Any new or worsening symptoms should be reported to the healthcare provider.