Herpes zoster is caused by reactivation of varicella (herpes zoster virus) latent in the body and is characterized by clusters of small acute blisters distributed along unilateral peripheral nerves, often accompanied by significant neuralgia. The human body is the sole host of the herpes virus, which can enter the bloodstream through the respiratory mucosa to form viremia and develop blisters or an insidious infection. In Chinese medicine, herpes zoster is called snake sores. In Chinese medicine, the cause of this disease is the accumulation of fire and toxins in the liver due to internal injury, depression of liver qi, and fire in the liver meridian, which can lead to the head and face of the wind; or the downward injection of dampness, which occurs in the yin and lower extremities; in the case of fiery toxins, it occurs in the trunk. In old and frail people, the pain is often severe and prolonged due to blood deficiency, liver exuberance, and damp-heat toxin accumulation, resulting in stagnation of qi and blood and obstruction of meridians. In short, the disease is dominated by damp-heat and fire toxins in the early stages, while in the later stages it is a combination of deficiency of blood and stasis and dampness. Western medicine believes that herpes zoster and chickenpox are different diseases caused by the same virus, namely varicella-zoster virus. The main treatment for this disease is to clear heat and dampness, move Qi and relieve pain. In the initial stage, the main treatment is to clear heat and dampness, and in the later stage, the main treatment is to activate blood circulation and relieve pain, and for those who are deficient, the treatment is to help eliminate evil and relieve pain.