Lip ulcers are cold sores, and canker sores are a type of mouth ulcer. Both can cause pain and discomfort but typically clear up without medical treatment. Lip ulcers are another name for cold sores.

You can help your sunburned lips heal with the following home remedies: Apply cool compresses to your lips, but avoid putting ice directly on your skin. Moisturize your lips with a gentle balm or ...

Swollen lips may be caused by allergic reactions, injuries, chapping or sunburn, infections, and cysts called mucoceles. The swelling comes from either inflammation or built-up fluid under the skin.