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Understanding your child's condition is an important step on your treatment journey. Learn more about causes, symptoms and diagnosis for a variety of conditions, as well as unique treatments and research being performed at Children's National.

Eosinophilic Esophagitis

Eosinophilic esophagitis, or EoE, is an allergic inflammation of the esophagus that usually results from a food allergy. Learn more about this chronic condition.

Foreign Bodies in the Ear, Nose and Airway

Foreign bodies in the ear, nose, and breathing tract (airway) sometimes occur in children. Foreign bodies refer to any object that is placed in the ear, nose, or mouth that is not meant to be there and could cause harm without immediate medical attention. Learn more about this condition.

Hearing Loss

Hearing loss can be categorized by many different types: sensorineural, conductive and mixed. Hearing loss can be congenital (present at birth) or acquired. Learn more about the types of hearing loss.


Lymphadenopathy is the term for swelling of the lymph nodes — the bean-shaped organs found in the underarm, groin, neck, chest and abdomen that act as filters for the lymph fluid as it circulates through the body.

Lymphatic Masses

There are many conditions involving lymphatic masses that require clinical care by a physician or other healthcare professional. Learn more about these conditions.

Lymphatic System

Neck masses in children often involve the lymphatic system, which is part of the immune system and functions to fight disease and infections. Learn more about this condition.


Mastoiditis is an inflammation or infection of the mastoid bone, which is a portion of the temporal bone. Learn more about this condition.

Neck Masses

Neck masses are common problems in infants and children. Although a neck mass can involve other structures in the head and neck area, most are benign (non-cancerous). Learn about this condition.

A young girl wipes her nose with a tissue.


A nosebleed is bleeding from tissues inside the nose (nasal mucus membranes) caused by a broken blood vessel. Learn more about this condition.

Obstructive Sleep Apnea

Obstructive sleep apnea is when a child briefly stops breathing while sleeping. It often occurs because of a blockage in the airway. Read more about this disorder.