Chapped, or cracked, lips is the term commonly used to describe dry lips. Chapped lips can be caused by several factors, that include:

• weather
• excessive licking of the lips
• certain medications

Chapped lips are a common condition that only occurs for most people. But some people may develop a more severe form of chapped lips called cheilitis. Cheilitis can be caused by an infection, characterized by cracked skin at the corners of the lips.

You can usually treat dry lips with simple treatment and preventive measures. If your lips continue to be severely dry and cracked, you should consider make an appointment with a dermatologist.

You may experience any of the following symptoms on or around your lips:

• dryness
• flaking
• scales
• sores
• swelling
• cracks
• bleeding

Lips don’t contain oil glands like other parts of the skin. This means lips are more susceptible to drying out and becoming chapped (cracked). Lack of moisture can make the problem worse, whether it’s weather-induced or related to a lack of self-care.

Little humidity in the air during the winter months is known to cause chapped lips. Frequent sun exposure in the summer can also worsen your condition.

Another common cause of chapped lips is habitual licking. Saliva from the tongue can further strip the lips of moisture, causing more dryness.

Everyone can get chapped lips, particularly if they have dry skin.

Taking certain medications can also increase your risk of developing chapped lips. Medications and supplements that can cause chapped lips include:

• vitamin A
• retinoids (Retin-A, Differin)
• lithium (commonly used to treat bipolar disorder)
• chemotherapy drugs

People who are dehydrated or malnourished are also more likely to have chapped lips than other people. Call your doctor if either of these are associated with your chapped lips—dehydration and malnutrition are both serious conditions that require immediate medical attention.

Cheilitis

If the severe dryness and cracking doesn’t improve with self-care, you should see a dermatologist. Cheilitis is often to blame for severely chapped lips. This is a condition marked by cracked skin at the mouth corners and several cracks on your lips.

If you have this condition, your lips may:

• be dark pink or red in color
• have a lumpy texture
• develop ulcers
• have white plaques on the surface

Cheilitis is often attributed to infections and inflammatory diseases, such as Crohn’s disease. Dental trauma and excessive saliva production may also turn a regular case of chapped lips into cheilitis. Bacteria can enter through the cracks and cause infection. Adults and children who have orthodontic braces, wear dentures, or use pacifiers are all susceptible to developing cheilitis.

A dermatologist can determine whether your dry lips are simply chapped or if you have cheilitis.

Dehydration and malnutrition

Dry lips can also be caused by dehydration or malnutrition. Dehydration causes symptoms including:

• lightheadedness
• constipation
• decreased urine production
• dry mouth
• headache

In severe cases, a person suffering from dehydration may experience low blood pressure, fever, rapid breathing, or a rapid heartbeat.

Malnutrition is characterized by many of the same symptoms as dehydration. Additional symptoms can include:

• muscle weakness
• decaying teeth
• bloated stomach
• bone fragility

Malnutrition can be caused by vitamin deficiencies, so those on limited diets (for example, vegetarians) need to make sure that they are getting enough of the vitamins they need.

People with alcohol addiction are also more susceptible to malnutrition due to vitamin deficiencies because excessive alcohol use can interfere with the body’s vitamin absorption. Older adults are also at higher risk for malnutrition because decreased appetite is common.

If you suspect you are dehydrated or malnourished, see your doctor right away.