If your child’s calves are swollen with allergic purpura, you can cooperate with your doctor to receive medication, avoid contact with allergens and pay attention to life management. 1. Medication: During the period of illness, anti-allergy medications such as loratadine (caution for those younger than 2 years old) can be used as prescribed by the doctor to control the allergy. If the condition is more serious, immunosuppressants may also be needed. 2. Avoid contact with allergens: It is recommended to take your child to the hospital for allergen testing to determine what kind of substances your child is allergic to. Avoid contact with allergens such as pollen and dust mites during the period of illness. 3. Pay attention to life management: During the period of illness, absolute bed rest is recommended. Usually, you can eat tomatoes, kiwi and other foods as appropriate. It is forbidden to contact and eat seafood and other allergy-prone substances within 2 months after the symptoms of skin purpura subside. There are other clinical methods to treat the child’s allergic purpura calf a little swollen. It is recommended to take your child to the pediatrician of the hospital in time, complete the relevant examinations (such as urine routine, etc.), and receive treatment under the guidance of professional doctors.