When children develop hives, the rash looks like chickenpox, but these two are completely different diseases. With chickenpox, fever usually occurs after the onset of the disease, and the oral mucosa can also be easily damaged. On the other hand, hives typically appear on the limbs, neck, or buttocks, with noticeable itching that becomes more pronounced at night. The difference between hives and chickenpox lies in their differing causes of infection, which also affects where the symptoms manifest. It is advised that parents pay attention to these differences and treat them accordingly to minimize harm.