Separation anxiety disorder (SAD) is a type of mental health problem. A child with SAD worries a lot about being apart from family members or other close people. The child has a fear of being lost from their family or of something bad occurring to a family member if they are not with the person.
All children and teens feel some anxiety. It is a normal part of growing up. Separation anxiety is normal in very young children. Nearly all children between ages 18 months and 3 years old have separation anxiety. They are clingy to some degree. But the symptoms of SAD are more severe. A child must have symptoms of SAD for at least 4 weeks to be diagnosed with SAD. A child with SAD has worries and fears about being apart from home or family that are not right for their age.