Decubitus ulcers are caused by prolonged bed rest leading to skin damage. The infection may cause localized symptoms such as erythema, skin ulcers, and skin decay, as well as systemic symptoms such as sepsis and toxemia. Early decubitus ulcer infection is mainly manifested by the appearance of red patches of tissue on top of the skin with clear boundaries, and the temperature of the body surface will also increase. When the infection worsens, it can damage the dermal tissue and form open ulcers and blisters, which are also accompanied by intense pain. If it develops further, it can lead to the appearance of decay in the wounds with ulcers and blisters, as well as the appearance of necrotic tissue. Decubitus ulcer infection may also lead to wound infection, resulting in systemic sepsis, toxemia, etc., with symptoms such as chills and high fever. Decubitus ulcer infection is a serious disease, and if you find that you have a decubitus ulcer, you should go to the hospital in time for treatment.