Growing pains are defined as pain around the knee joint or on the front side of the lower leg in children without any history of trauma in these areas and with normal activity and no local tissue redness, swelling, or pressure pain. After examination of the child, after excluding the possibility of other diseases, it can be determined that it is growing pains, which is a normal physiological phenomenon. 1. Etiology 1. The bones of the lower limbs grow rapidly during the development of children, while the growth of joint capsules, tendons, ligaments and surrounding nerve fiber tissues is relatively slow, resulting in the bones pulling on the surrounding tissues, thus causing pain. 2. Most of the children are active, which makes the metabolism of tissue cells in the body more vigorous, easily causing certain metabolic products (lactic acid, etc.) to gather in the tissues, and when the nerve endings are stimulated, muscle pain will appear. Clinical manifestations 1, mostly lower limb pain. The most common site of occurrence is in the front of the knee, calf and thigh, occasionally in the groin area, and the pain is usually outside the joint. Typically, the pain is bilateral, but there are some cases of pain on one side. 2. Mostly muscular pain. It is primarily a muscle pain, not a joint or bone pain. There is also no redness, swelling or heat in the painful area. 3. The pain mostly occurs at night. The most important feature is that it almost always occurs at night. During the day, because children are more active, even if they feel uncomfortable, they may not easily notice it because they are focused on other things. When the body and mind relax at night, the painful symptoms can make the affected child feel uncomfortable and even unbearable. Differential Diagnosis Pediatric growing pains will disappear on their own as they grow older. However, when leg pain occurs in children, parents should not always think that it is growing pains. Some serious diseases can also appear in the early stage of the onset of pain in the lower extremities, which should be given great attention to avoid delaying treatment and causing irreparable consequences. 1, septic arthritis, children can also appear at the knee joint pain, but the pain is very intense, the joint often appear red and swollen, local skin temperature increases, joint movement is limited. The onset of the disease is usually rapid, and the child will have a high fever, chills and other symptoms of systemic infection. 2.Acute hematogenous osteomyelitis, children usually have a rapid onset, with obvious symptoms of systemic toxicity, such as headache, high fever, and chills, etc.; the joints are in continuous pain, and joint movement is impaired. 3, rheumatoid arthritis, most of the joint pain is wandering, mainly in the knee, ankle and other large joints, localized redness, swelling, heat and pain, generalized fever, fatigue and weakness, loss of appetite. The pain will not subside on its own. It takes about a week of anti-inflammatory, antipyretic and anti-rheumatic treatment for the joint pain to disappear. Treatment 1. Local hot compress and massage. Hot towels can be used to massage or apply hot compresses to the painful parts of the child, which can ease the child’s tension and thus relieve the discomfort caused by pain. Massage must pay attention to the strength of the kneading, so that the child in a gentle touch to sleep. 2. Reduce strenuous exercise. Growing pain is not a disease, there is no need to restrict the activities of the child, but if the pain is more serious, you should pay attention to let the child rest more, let the muscles relax, do not carry out strenuous activities. 3.Supplement nutrition. The child should be allowed to take more nutrients that can promote the growth of cartilage tissue, such as milk and eggs. Vitamin C is good for collagen synthesis, so you can let your child eat more vegetables and fruits rich in vitamin C.