A persistent sore on the lip is one that doesn’t get better within a couple of weeks. Most small cuts or irritations heal much faster than that. When a sore hangs around, it can be a sign of an underlying health issue. The skin on your lips is very sensitive, which makes it easy for infections or irritants to cause problems.
Persistent sores can look different from person to person. They might be small, red, and inflamed, or they could be larger, crusty spots. It’s a good idea to pay attention to any changes in the sore’s size, color, or how it feels. Noticing other symptoms like pain, itching, or swelling can also help figure out the cause.
Common Reasons for Stubborn Lip Sores
Viral Culprits: Cold Sores
Cold sores, which are also called fever blisters, are caused by the herpes simplex virus (HSV). They often show up as a cluster of small, painful blisters that can break open and form a crust. Cold sores are very easy to spread and can be brought on by stress, sickness, or too much sun.
Normally, cold sores heal within two to four weeks. But sometimes, they can become a persistent problem if you get them often or if they get a secondary infection. While antiviral medicines can help manage the symptoms and reduce how often you get them, they don’t actually get rid of the virus.
Allergies and Irritation
Sometimes, a lip sore is caused by an allergic reaction or irritation from things you use every day. Common causes include cosmetics, dental products, and certain foods. For example, some people might get contact dermatitis, which causes redness and swelling, after using a new lip balm or toothpaste. The best way to deal with this is to figure out what’s causing the problem and stop using it. Switching to hypoallergenic products can help your lips heal.
Bacterial Infections
Bacterial infections, like impetigo, can also cause sores on the lips. Impetigo is known for its red sores that pop, ooze, and form a yellow-brown crust. It’s very contagious and usually needs antibiotics to clear up. Keeping your hands and face clean and avoiding contact with people who are infected can help stop the spread of these kinds of infections. If you think you might have a bacterial infection, it’s important to see a doctor for the right treatment.
