Chest skin pain may be herpes zoster, keloids, rib fractures and other diseases. 1. Herpes zoster: when the body is stimulated resulting in a decrease in body resistance, varicella zoster virus is activated and replicates in the skin along the sensory nerve axon down to the area innervated by the nerve, while inflammation and necrosis of the affected nerve occurs, resulting in neuralgia. Herpes zoster causes chest skin pain, mainly involving the intercostal nerves in the chest and thus producing neuralgia. 2. Keloid: it is excessive scar proliferation caused by trauma, progressive growth, and at the same time will infiltrate the normal tissue, while the pain is obvious and persistent. If the skin of the chest is traumatized, it may cause keloid and the skin pain caused by it. 3. Rib fracture: Recent trauma, especially a sharp blow to the ribs in the chest, which results in a rib fracture in the chest, can lead to skin pain in the chest. Chest skin pain can also be caused by other reasons, it is recommended to go to the regular hospital in time, after clarifying the cause of the disease under the guidance of the doctor’s treatment.