For cervical spondylosis, in addition to the application of relevant drugs taken orally and injected to relieve symptoms, there is also a wide variety of topical medications that can be applied as an adjunct to the treatment, such as various creams, patches and topical emulsions. Most of the topical medications belong to traditional Chinese medicines, while some belong to western pharmaceutical preparations. The application of the above topical medications helps to relieve symptoms and eliminate local inflammation, but it is important to pay attention to the adverse effects of the medications, 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. The 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, skin allergy should be suspended, and after a few days of discontinuation, choose whether to continue to apply the above drugs, if there is still allergy, it is recommended to disable this drug, you can try to replace other topical drugs to continue treatment.