Third trimester
Learning Center
Tetralogy of Fallot
These four heart problems present at birth change how blood flows through the body. Know the symptoms and treatment.
Vascular rings
Learn more about this condition in which malformations of the aortic arch encircle the windpipe and esophagus and can press against them.
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.
Restless legs syndrome
Uncomfortable sensations in your legs can interrupt your sleep — making you drag through your day. These therapies calm the restlessness and improve sleep.
Allergies
Allergy symptoms can range from mild to severe, even life-threatening. Most allergies can't be cured, but treatments can help.
Rheumatic fever
Learn about this complication of strep throat and scarlet fever and what you can do to prevent it.
Ulcerative colitis
This type of inflammatory bowel disease affects the innermost lining of your digestive tract. Learn about available treatments for this often exhausting condition.
Eosinophilic esophagitis
Learn more about the causes and treatment of eosinophilic esophagitis — a digestive disease caused by an allergic reaction.
Hay fever
Find out more about how to diagnose and get relief from this common condition that can make you feel awful, seasonally and year-round.
Hemophilia
In this inherited disorder, the blood lacks one of several clot-forming proteins. The result is prolonged bleeding, which can be life-threatening.
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