Cold Sores - A Problem? How to Heal and Prevent Them!
Posted on 11/15/2025 by Scholes Periodontics & Implants |
 Cold sores, also known as fever blisters, are small, fluid-filled blisters that typically appear on the lips, around the mouth, or on the nose. They are caused by the herpes simplex virus (HSV-1) and are highly contagious. While they are not usually serious, cold sores can be painful and unsightly. The good news is that there are steps you can take to heal and prevent them.
What are the symptoms of a cold sore?
The first symptom of a cold sore is usually a tingling or burning sensation in the area where the sore will develop. This is followed by the appearance of a small, red bump that may feel itchy or painful. The bump will then turn into a blister filled with fluid. The blister will eventually break open and crust over. Cold sores typically heal within 7-10 days, but they can sometimes last longer.
What causes cold sores?
Cold sores are caused by the herpes simplex virus (HSV-1). The virus is highly contagious and can be spread through direct contact with the fluid from a cold sore. The virus can also be spread through saliva, even if there are no visible cold sores present.
Once you have been infected with HSV-1, the virus will stay in your body forever. However, it will often remain dormant and only cause symptoms when it is triggered by certain factors, such as:
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Stress |
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Fatigue |
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Illness |
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Sun exposure |
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Menstrual cycle |
Who is at risk for cold sores?
Anyone can get cold sores, but they are most common in people under the age of 20. People with weakened immune systems are also at increased risk of developing cold sores.
How are cold sores treated?
There is no cure for cold sores, but there are treatments that can help to relieve the symptoms and shorten the duration of the outbreak. Over-the-counter antiviral creams, such as acyclovir and penciclovir, can be applied to the cold sore to help it heal faster. Prescription oral antiviral medications, such as valacyclovir and famciclovir, can also be used to treat cold sores. These medications are most effective when started as soon as you notice the first symptoms of a cold sore.
In addition to antiviral medications, there are a number of home remedies that can help to relieve the symptoms of cold sores. These include:
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Applying a cold compress to the cold sore |
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Taking over-the-counter pain relievers, such as ibuprofen or acetaminophen |
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Keeping the area around the cold sore clean and dry |
How can I prevent cold sores?
There are a number of things you can do to help prevent cold sores. These include:
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Avoiding close contact with people who have cold sores |
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Washing your hands often with soap and water |
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Avoiding touching your face |
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Using sunscreen on your lips, especially during the summer months |
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Getting enough rest and managing stress |
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Taking an antiviral medication, such as valacyclovir or famciclovir, daily to suppress the virus |
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Maintaining good oral care habits, including brushing your teeth twice a day, flossing daily, and seeing your dentist for regular checkups and cleanings |
Is there a link between cold sores and gum disease?
Although they are both caused by viruses, there is no direct link between cold sores and gum disease. Gum disease, also known as periodontal disease, is an infection of the gums that can damage the soft tissues and bones that support your teeth. It is caused by a buildup of plaque and bacteria on the teeth. If left untreated, gum disease can lead to tooth loss.
While there is no direct link between cold sores and gum disease, there are some factors that can increase your risk for both conditions. These include:
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Poor oral hygiene |
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Weakened immune system |
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Stress |
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Smoking |
If you are concerned about cold sores or gum disease, it is important to see your dentist for a checkup. Your dentist can assess your risk for these conditions and recommend the best way to prevent or treat them.
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