Symptoms of polymyositis in children include headaches, weakness and fatigue, and edema. Children with polymyositis is a relatively common clinical disease, a rheumatic immune system disease, with a certain relationship with the individual’s body immunity, the emergence of this disease may lead to muscle pain, headache symptoms, but also may appear muscle weakness, body fatigue and other symptoms. If children with polymyositis have already appeared, it is recommended to actively consult a doctor for examination, and after diagnosis, you can choose to use a small dose of glucocorticoid drugs under the guidance of the doctor, such as mometasone furoate, dexamethasone and so on. Usually need to observe the child’s physical condition, if there are abnormal symptoms, it is recommended to consult a doctor in time.