Fitness basics
Learning Center
Hydrocele
Find out more about the symptoms, causes and treatments for this swelling in the scrotum.
Hydronephrosis
Learn about this condition that occurs when urine doesn't drain properly from the upper urinary tract, leading to kidney swelling.
Juvenile idiopathic arthritis
Learn about this type of arthritis that affects children and can cause growth problems, joint damage and eye inflammation.
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.
Shigella infection
Shigella infection is an intestinal infection that causes diarrhea. Learn how to recognize, treat and prevent the spread of this contagious condition.
Temporal lobe seizure
These seizures begin in the temporal lobes of the brain. They can trigger a variety of symptoms such as odd feelings, fear and unresponsiveness.
Thrombocytopenia (low platelet count)
Thrombocytopenia — Comprehensive overview covers symptoms, causes, treatment of a low platelet count.
Hand-washing: Do's and don'ts
Done properly, hand-washing is a simple way to prevent the spread of germs and avoid getting sick.
COVID-19 infections by race: What's behind the health disparities?
Understand how underlying health conditions, the places where people live and work, and racism can affect who becomes seriously ill with COVID-19.
COVID-19: Long-term effects
Learn about the possible long-term effects of COVID-19.
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