Oral lichen planus redness, swelling and pain can be treated with medications such as isacridine lactate solution, benzocaine gel, dexamethasone, triamcinolone acetonide, and so on. Clinically, the appearance of oral lichen planus need to use medication under the guidance of the doctor, first of all, you can use anti-inflammatory drugs, such as lactic acid isacridine solution, chlorhexidine solution, etc., at the same time, you can also choose to use the pain medication, such as benzocaine gel, lidocaine cream, etc., to be able to achieve the effect of pain relief. Oral lichen planus can also be treated with dexamethasone, triamcinolone acetonide, azathioprine and other medications, which can alleviate the symptoms. You need to pay attention to personal hygiene, keep your mouth clean, and also pay attention to diet, eat less spicy and stimulating food. The above drugs should be used under the guidance of a doctor.