You have no need to panic. Dark under eye circles, even with purple and red tones, are common in children.Red circle rarely caused by serious illness, dark under eye circles usually result from allergies, asthma, lack of sleep or heredity. Discovering the cause of dark red circles under the eyes of children requires research and help from your pediatrician.
As a research conducted nearly 7 million children suffer from asthma. Dark under-eye circles are frequently associated with asthmatic conditions.
I suggest you to seek a doctor's opinion if your child has dark red circles under his eyes and wheezes or has difficulty breathing during exercise. In asthmatic children, dark under-eye circles often appear before asthmatic attacks.