If you have a neck flash and your neck hurts when you move it, first of all, when you have a neck flash, it is important to avoid more activities in the neck. Cold compresses are recommended within 72 hours of the flash, as they can help relieve the pain and swelling caused by the flash. In addition, you can also use topical Fotarin ointment or Yunnan Baiyao aerosol to relieve pain. After 72 hours of flashing tendon, you can do hot compresses, which can relax the neck muscles and improve the blood flow in the neck or apply safflower oil to activate the blood and relieve pain. If the pain is still not relieved after 72 hours of flashing tendon, it is recommended to go to the orthopedic department of a regular hospital in time.