Back fever accompanied by pain may be caused by herpes zoster, heart disease, infection, cervical spondylosis, allergy, muscle strain and other diseases, which need to be examined in time and treated reasonably according to different causes. 1. Herpes zoster: It is caused by herpes zoster virus infection. Herpes can appear along the area where the nerves are distributed, accompanied by pain, burning sensation and other discomforts. 2. Heart disease: such as myocarditis, angina pectoris, etc., the pain can radiate to the back, you can check the electrocardiogram and so on to confirm the diagnosis. 3. Infections: such as colds. Most of the colds are caused by viral infections, which can cause generalized pain, backache, headache, nasal congestion and other symptoms. 4. Cervical spondylosis: it is related to long-term sedentary behavior, and may cause neck discomfort, stiff neck, dizziness and other symptoms, and the pain may radiate to the back, which can be diagnosed by checking cervical spine films. 5. Allergy: such as atopic dermatitis, contact dermatitis, etc., or allergic diseases, the patient excessive scratching of the itchy parts, can cause the back part of the fever, accompanied by the symptoms of pain. 6. Muscle strain: It is related to long-term heavy physical activities and long-term work, which causes muscle strain and back pain and discomfort. If you have back fever with pain, you can go to the hospital for further examination to confirm the diagnosis and find out the cause of the disease before treatment.