When osteomyelitis is not treated thoroughly, it can lead to the germs latent in the body, and when the cold, fever and some other reasons lead to weakness and low resistance, the pathogenic bacteria will grow rapidly and lead to the recurrence of osteomyelitis. Osteomyelitis relapse mainly has the following symptoms: 1, local redness, swelling, fever, local lesions can have skin redness, swelling, increased skin temperature, sometimes due to skin pigmentation, resulting in dark skin, there can be multiple scar formation; 2, systemic symptoms, fever is a typical systemic symptoms, but long-term chronic sclerosing osteomyelitis, more often than not, the body temperature does not increase, sometimes, white blood cell count is also 3, local pain, osteomyelitis relapse, the newly generated pus gathered in the bone marrow cavity, resulting in increased pressure in the bone marrow cavity, so there is pain, chronic sclerosing osteomyelitis pus generation is slower, so mainly dead bone formation, pain is relatively light, or even no pain symptoms, patients only describe the soreness and discomfort; 4, sinus tract formation, that is, long-term inflammatory hyperplastic tissue, pus breaks through the skin and forms sinus tracts, which is a typical manifestation of osteomyelitis relapse; 5, bone thickening, long-term inflammatory stimulation can lead to bone distortion, deformation, thickening, X-ray film shows bone deformation, thickening, with obvious clumping of bone ischemia.