For lumbar disc herniation, in addition to the application of oral and injectable related drugs to relieve symptoms, there are also various topical drugs that can be applied to assist in the treatment, such as various creams, patches and topical emulsions. Most of the topical medications are traditional Chinese medicines, while some are western pharmaceutical preparations. The application of the above topical medications helps to relieve symptoms and eliminate local inflammation, but the application of the above medications must pay attention to the adverse drug reactions, the most common of which are skin allergy, itching and rash. The duration of application of topical medications to the affected area, generally recommended from 6 to 8 hours, after which the medication should be removed promptly, can reduce the risk of adverse reactions. Topical medication should be removed at any time after symptoms such as itching and redness of the skin. After a few days of continuous use, the phenomenon of skin allergy should be suspended, after a few days of discontinuation of the drug, as appropriate, then choose to continue to apply the above-mentioned drugs, if there is still an allergic situation, it is recommended to disable this drug, you can try to replace other topical drug treatment.