Contact the Audiology Program 617-355-6461 Fax 617-730-0320 Request an Appointment Request a Second Opinion What is hearing loss? Hearing loss is a problem with a child’s ears that reduces their ability to detect sound. Hearing loss can affect one or both …

Contact the Gastroenterology Procedure Unit 617-355-6172 Request an Appointment Request a Second Opinion What is helicobacter pylori? Helicobacter pylori, or H. pylori, is a spiral-shaped bacterium found in the stomach. H. pylori secretes acid, damages …

Contact the Blood Disorders Center 617-355-8246 Fax 617-730-0641 International +1-617-355-5209 Email Email us Request an Appointment Request a Second Opinion What is hemolytic disease of the newborn? Hemolytic disease of the newborn (HDN) — also called …

Contact the Division of Newborn Medicine 617-919-2358 Request an Appointment Request a Second Opinion What is hypocalcemia? Hypocalcemia is a condition in which there is too little calcium in a baby's blood. A common form of hypocalcemia in babies is …

Contact the Division of Endocrinology 617-355-7476 Fax 617-730-0194 Monday - Friday 7:00 AM - 8:00 PM Saturday 9:30 AM - 6:00 PM Request an Appointment Request a Second Opinion What is hyperparathyroidism? Hyperparathyroidism is a condition where the …

Contact the Division of Endocrinology 617-355-7476 Fax 617-730-0194 Monday - Friday 7:00 AM - 8:00 PM Saturday 9:30 AM - 6:00 PM Request an Appointment Request a Second Opinion What is hypoglycemia and low blood sugar? Hypoglycemia is the state of having …

Contact the Division of Endocrinology 617-355-7476 Fax 617-730-0194 International +1-617-355-5209 Monday - Friday 7:00 AM - 8:00 PM Saturday - Saturday 9:30 AM - 6:00 PM Request an Appointment Request a Second Opinion What is hypopituitarism? …

Contact the Department of Urology 844-793-0051 Fax 617-730-0474 Request an Appointment Request a Second Opinion What is hypospadias? In hypospadias, the opening of a boy’s urethra (through which both urine and semen pass) is located on the underside of …

Contact the Thyroid Center 617-355-8226 Fax 617-730-6217 Email thyroid@childrens.harvard.edu Request an Appointment Request a Second Opinion What is hypothyroidism? In hypothyroidism, the thyroid gland is underactive and doesn’t produce a normal amount of …

Contact the Vascular Anomalies Center 617-355-5226 Fax 617-730-0752 International +1-617-355-5209 Email vascular@childrens.harvard.edu Request an Appointment Request a Second Opinion What is hereditary hemorrhagic telangiectasia? Hereditary hemorrhagic …