Common Reasons for Stubborn Lip Sores
There are several reasons why a sore on your lip might not heal. The most common causes are viral infections, bacterial infections, allergies, or constant irritation. Each of these affects your lips in a different way and needs its own kind of treatment. While some causes, like a simple cut or chapped lips, are not serious and will get better with basic care, others might need a doctor’s help. Knowing the possible causes can help you choose the right self-care steps and have a better conversation with a healthcare provider.
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.
