Colds usually do not cause redness and swelling of the dorsum of the feet. Redness and swelling of the back of the feet should be considered to be caused by other diseases. If the redness and swelling of the back of the feet is caused by local soft tissue infection, anti-infection treatment should be taken; if it is caused by gouty arthritis, anti-inflammatory and uric acid-lowering treatment should be carried out; and if it is caused by bone tuberculosis, standardized anti-tuberculosis treatment should be carried out. 1. Local soft tissue infection: if the skin on the back of the foot has been broken recently, there may be bacterial invasion leading to soft tissue infection on the back of the foot, thus causing redness and swelling of the back of the foot. This situation is mainly anti-infection treatment, can take cefixime, amoxicillin and other antibiotic treatment. 2. Gouty arthritis: due to the high concentration of uric acid in the blood, resulting in the precipitation of monosodium urate crystals, and then deposited in the dorsum of the foot after the inflammatory reaction caused by redness, swelling and heat pain. In the acute stage, you can take colchicine to control the inflammation quickly, and in the chronic stage, you can take uric acid-lowering drugs, such as allopurinol and febuxostat. 3. Bone tuberculosis: Bone tuberculosis can also cause redness and swelling on the back of the foot when abscesses are formed on the back of the foot. Patients can go to the hospital to do the relevant examination, after diagnosis, we should carry out standardized anti-tuberculosis treatment. Surgery can also be performed to cut open the abscess and drain the pus. Usually pay attention to rest, balanced diet. It is recommended that patients go to the hospital in time to find out the cause of the disease, under the guidance of the doctor to carry out appropriate treatment, do not take drugs privately.