Oral herpes can cause outbreaks of fluid-filled blisters in the mouth or on the lips that last for a week to 10 days. When the blisters rupture, the scabs last for a few days without pain. This infection is caused by the herpes simplex virus. The herpes simplex virus is so common that up to four out of five adults in the U.S. carry it. The first oral herpes infection can cause flu-like symptoms, blisters, and ulcers on the gums and tongue. But there may be no noticeable symptoms at all. Once infected, the virus will be present in the body permanently. Still, the infection-causing sores can stay dormant with proper care. Oral herpes outbreaks are contagious, so you should wash your hands regularly and avoid touching the sores.
Oral herpes looks different in children. Children aged one to four who carry the simplex virus sometimes develop a condition called herpes gingivostomatitis. Symptoms include swollen gums and small blisters. The child may develop a fever, feel irritable, and tired. A few days after the small blisters appear on the gums, ulcers usually appear around the mouth. These blisters and ulcers heal themselves, just like sores in adults. The virus stays dormant most of the time, but stress, trauma, sunlight, and the common cold can cause symptoms to reappear.
These infections may seem scary, but many people get one or the other throughout their lives. Knowing the common signs and symptoms of mouth infections can help you recognize and seek treatment if necessary. Still a bit unsure? Consult your dentist!