Many preschool and school-age children often tell their parents that their joints hurt. Many parents think that this is a normal physiological phenomenon that occurs during the child’s growth and development, and therefore do not pay enough attention to it. However, Professor Zeng Huasong, Director of the Immunology Disease Department of Guangzhou Children’s Hospital, points out that there are many causes of joint pain in children that parents should not ignore. What is pediatric growing pains? Zeng Huasong introduced that this is a normal physiological phenomenon that occurs during the growth and development of children. Physiologists have proven that children between the ages of 1-3 years old gain weight faster than the speed of height growth, medically known as the first weight gain period. 4-7 years old children, due to the rapid growth of height, the growth of the lower limb bones exceed the speed of muscle growth, often due to leg muscles, tendons pulling a slight pain, individual children are so painful that they can not sleep at night. This pain mainly occurs in the lower extremities and between the knee and ankle joints, and is more likely to occur in the evening. As the child grows older and slows down in height, the pain will gradually decrease and disappear. Parents usually just need to pay attention to control the child’s activity, reduce fatigue and tension, ensure sufficient sleep time every day, and maintain a good mood; when temporary pain occurs in the lower extremities, just use your hand to gently massage the local area, let the child read a book or tell them a story, let them do some light activities, move the limbs slightly to distract themselves, and then you can effectively relieve the child’s growing pains. In addition to pediatric growing pains, reactive arthritis caused by abnormal immune system reactions due to infections and other factors is a common cause of joint pain in children. For example, colds and fevers make viruses and bacteria invade the body, causing immune-responsive inflammation that damages synovial cells in the joints and causes reactive arthritis. In addition, pediatric rheumatoid caused by children’s joint pain should pay special attention. Zeng Huasong introduced, pediatric rheumatoid is an autoimmune disease. Due to viral infections, environmental changes, increased pollution, changes in dietary structure, the influence of cold and dampness, as well as genetics, many factors, the southern region is suffering from pediatric rheumatoid children are increasing, the youngest only a few months can start the disease. Unlike pediatric growing pains, pediatric rheumatoid rheumatism is mainly a painful swelling of small joints, especially the small joints of the fingers and toes, but large joints can also be affected. In addition to the symptoms of joint pain, infants and children tend to have a more generalized onset. Specific symptoms are fever, rash, arthritis of the liver and spleen, and other organ involvement. The fever is flaccid, with one or two peaks in a day, with high fever up to 40°C or more, and daily fluctuations of up to 3-4°C. The fever may be preceded by chills. The fever may be accompanied by chills before the fever. The condition of the child is severe during the fever, but the general condition of the child improves after the fever subsides. The fever may last for weeks or months and is often accompanied by a rash, which is polymorphic and consists of scattered erythematous patches of varying sizes, occasionally fused into patches, or in a circular pattern. The skin rash is short-lived and easily recurrent. Since there are no obvious symptoms of arthritis, it is easy to be misdiagnosed as sepsis. Compared with adult rheumatoid, children’s immune system has a gradual development and maturation process, children’s rheumatoid is relatively easy to cure, but it is important to detect and treat early, otherwise it will easily lead to disability or even life threatening. Therefore, Zeng Huasong stressed that “pain” is a pathological state, although sometimes children’s joints only show pain, and there is no redness, swelling, heat and other symptoms, parents should not easily think that it is growing pains, but to take the child to the hospital for examination in a timely manner.