It is an immune system mediated skin disease. Studies have found that when AD develops in an infant or young child, the child tends to get better with time. For some children, the condition completely disappears by age 2. This has not happened with your daughter. About half (50%) of the children who get AD will have it as an adult. The good news is that the AD often becomes milder with age. There is no way to know whether the AD will go away or be a lifelong disease. This makes treatment very important. Treatment can stop the AD from getting worse. Treatment also helps to relieve the discomfort.