Allergies in infants and children are common. If your son or daughter has symptoms that may be allergy-related, finding their cause and a doctor to treat them can be a stressful experience for both you and your child. But the sooner you can identify the trigger for an allergy, the sooner you can help your child get back to just enjoying being a kid. Infants and children often experience symptoms that raise suspicions of an allergic condition. Allergy testing can help determine whether the symptom of concern is caused by an allergy and what the specific allergen might be.