Mouth long red pile consider herpes simplex, acne, lipitis, etc., the symptoms of the lighter not rubbing the medicine can be good, the symptoms of the heavier recommended treatment with medication. 1. Herpes simplex: Herpes simplex is a contagious disease caused by the herpes simplex virus infection. When the symptoms are mild, it can be cured by itself, but when the symptoms are severe, the pain will be more obvious, and even infections will not be able to be cured by itself, so it is necessary to use antiviral drugs, such as acyclovir ointment and penciclovir ointment, etc. The symptoms of herpes simplex can be cured by itself. 2. Acne: Acne is a chronic inflammatory disease of the sebaceous glands of the hair follicles, this disease also has a tendency to heal itself, but the symptoms of the more serious can be applied medication, such as tazarotene, adapalene, benzoyl peroxide, azelaic acid and so on. 3. Lipitis: Lipitis is an inflammation that occurs in the lips, with mild symptoms that can be self-healing, and more severe or recurring symptoms should be treated with medication that can be applied with gentamycin ophthalmic ointment, tretinoin cream, and so on. The red lump on the mouth should go to the hospital, clear cause, according to the condition of the treatment, if you need to use drugs, should strictly follow the doctor’s instructions, not self-medication.