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Sick sinus syndrome
This heart rhythm disorder causes slow, paused or irregular heartbeats. Learn the symptoms and how it's treated.
Primary immunodeficiency
Frequent infections could mean you have an immune system disorder. The conditions in this category are usually caused by genetic changes.
Encephalitis
Learn about this potentially fatal condition associated with inflammation of the brain and what you can do to prevent it.
Hydronephrosis
Learn about this condition that occurs when urine doesn't drain properly from the upper urinary tract, leading to kidney swelling.
Pulmonary atresia
This life-threatening heart condition that's present at birth changes the way blood travels from the heart to the rest of the body.
Aortic valve disease
Learn more about diseases that affect the valve between the heart's main pumping chamber and the body's main artery.
Albinism
In this group of inherited disorders, the body makes little or no melanin, a pigment that determines hair, skin and eye color and vision development.
Low sperm count
Having a low sperm count can make conceiving a child difficult, but not necessarily impossible. Learn about possible causes and treatment.
Growth plate fractures
Growth plate fractures — This common childhood bone injury often needs immediate treatment as it can result in a shorter, longer or crooked limb.
Klippel-Trenaunay syndrome
Main signs of this congenital disorder involve a red birthmark (port-wine stain), vein malformations, and overgrowth of tissues and bones.
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