Reactive Attachment Disorder
Reactive attachment disorder can be caused by a variety of circumstances, including repeated caregiver changes. In some cases, it's the result of being in an orphanage or foster care. As a result, the child doesn't understand the feelings of being unloved, and may distrust caregivers. Treatment for this condition involves education and psychoeducation for the entire family. The best course of action is to seek treatment before the disorder becomes more serious. Another intersting article.