As soon as the weather is cold, the child cries that his leg hurts. What happened?

Generally speaking, if children aged 3-4 often complain about leg pain, but they don't have a fever, and their joints are not red, swollen and tender, the pain will soon get better. Please rest assured that the child does not have arthritis, but grows fast and starts to walk and run, so the burden on the lower limbs is heavy, which leads to congestion at the bone end and the child will feel leg pain.

In addition, it is necessary to give children a detailed physical examination to check whether they have ever suffered from rickets, because some children who have suffered from rickets will leave a slight deformity of their lower limbs. If there are slight "X" or "O" legs, the knee joint and ligaments are slack, and the stress on the joint surface is uneven, which leads to the looseness and instability of the knee joint. Children will feel leg pain if they walk too much.

In both cases, leg pain often occurs in the afternoon or evening, especially during excessive activity. At this time, a night's sleep can stop the attack.

In another case, some children with respiratory infections can also cause leg pain. After the upper respiratory tract infection improves, the leg pain disappears, which is because the upper respiratory tract infection can cause transient synovitis of the knee joint.

The leg pain in the above three situations does not need treatment, as long as you have a good rest, limit your child's activities appropriately, and sometimes add some calcium and vitamins appropriately.

For the leg pain of children aged 5- 15, attention should be paid to the occurrence of rickets in the later stage. Although it is rare, we should pay attention to it. This disease is caused by a lack of vitamin D. Most of them occur in late winter and early spring when there is no sunshine. This age is the second peak of growth and development, and the demand for vitamin D and calcium increases. If it is lacking, it will lead to disease. It is characterized by walking fatigue and lower limb pain, especially knee, ankle and calf pain. Some people occasionally have "leg cramps" and some people may also have heel pain. These symptoms are aggravated after standing for a long time, walking for a long time and fatigue, but can be relieved after rest, and may be accompanied by restless sleep and sweating. Vitamin D and calcium supplementation can improve symptoms.