Second trimester
Learning Center
Nightmare disorder
Nightmare disorder involves disturbing or scary dreams that awaken you, causing distress or preventing adequate sleep.
Keratitis
An inflamed, red eye can be a minor nuisance — but sometimes it means a more serious problem. Find out about symptoms, treatment and prevention for this potentially dangerous eye condition.
Erectile dysfunction: Viagra and other oral medications
Get the facts on medicines that are taken by mouth for ED.
COVID-19 vaccines: Get the facts
Find out about the COVID-19 vaccines, the benefits of COVID-19 vaccination and the possible side effects.
Minimally invasive heart surgery
Learn more about this surgery that uses small incisions in the chest as an option to open-heart surgery.
Pericarditis
Inflammation of the tissue surrounding the heart can cause sharp chest pain and other symptoms. Know how pericarditis is diagnosed and treated.
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.
Mayo Clinic Minute: Why concussion screening is important
Concussion screening can help determine when athletes can return to play.
Fundal height: An accurate sign of fetal growth?
Understand how fundal height is measured and what it means.
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