Allergic cheilitis generally occurs when the patient's lips come into contact with some allergenic substances. For example, if a patient consumes allergenic foods, like certain proteins that infants and young children might be allergic to, this can lead to inflammation of the lips, itching, and redness. In such cases, it is generally recommended that the patient not worry too much and that no special treatment is required, as observation can lead to recovery. Some adults develop lip allergies possibly due to the use of certain products like lip balms or lipsticks, which can also lead to allergic reactions on the lips. Patients are advised to identify the cause of their allergy and avoid the allergens to alleviate the symptoms. Additionally, if a patient experiences severe allergic reactions on the lips, they can apply some anti-allergy medication to relieve itching.