Butyl flufenamic acid ointment belongs to non-steroidal anti-inflammatory drugs, with anti-inflammatory and analgesic effects, and is commonly used in the treatment of non-infectious subacute eczema, chronic lichen simplex, chronic eczema and other skin diseases. Any drug may have certain side effects, and some people may experience itching, irritation, erythema, as well as burning sensation, dryness and other adverse reactions after topical application of flufenamic acid butyl ester ointment. It is important to note that it is contraindicated in patients who are allergic to the product, or have severe heart failure. It should be used with caution in patients with a history of hypertension or heart failure. For people who need to use flufenamic acid butyl ester ointment externally, it is recommended to go to a regular hospital and use the medicine under the guidance of a doctor, do not use the medicine without authorization.