Aerobic exercise
Learning Center
How you hear
Your ears enable you to gather and interpret sounds from the world around you.
Dermatitis
Learn about the symptoms, causes and treatments of this itchy skin condition that affects children and adults, and about how moisturizers help prevent it.
Congenital adrenal hyperplasia
This group of inherited genetic conditions limits the adrenal glands' ability to make certain vital hormones.
Vaginal agenesis
In this rare condition that occurs before birth, the vagina doesn't develop and the uterus may only develop partially or not at all. Learn about treatment.
Rheumatic fever
Learn about this complication of strep throat and scarlet fever and what you can do to prevent it.
Atrial septal defect (ASD)
This heart problem that is present at birth causes a hole between the heart's upper chambers. It can be treated.
Ehrlichiosis and anaplasmosis
Learn how to prevent and treat the tick-borne diseases ehrlichiosis and anaplasmosis.
Separation anxiety disorder
This is intense or prolonged separation anxiety that interferes with school or other daily activities or includes panic attacks. Learn about treatment.
Thrombocytopenia (low platelet count)
Thrombocytopenia — Comprehensive overview covers symptoms, causes, treatment of a low platelet count.
COVID-19 antibody testing
Learn how COVID-19 antibody testing is done to find out if you've had a past infection with SARS-CoV-2, the virus that causes coronavirus disease 2019.
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