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Learning Center
Scorpion sting
Scorpion stings are painful but rarely life-threatening. Young children and older adults are most at risk of serious complications.
Mesenteric lymphadenitis
This condition involves swollen lymph nodes in the membrane that connects the bowel to the abdominal wall. It usually affects children and teens.
Allergy skin tests
Considering skin testing for your allergies? Learn about the risks, results and what to expect during testing.
Concussion
This brain injury can cause headaches, dizziness, trouble concentrating and other symptoms that often improve within days to weeks.
Down syndrome
Down syndrome is a genetic disorder caused when abnormal cell division results in extra genetic material from chromosome 21.
Sunburn
Learn more about how UV rays harm your skin and what you can do for symptom sunburn relief and how to protect yourself from sun exposure.
Agoraphobia
Agoraphobia is an anxiety disorder in which you fear and avoid public places or situations where you might feel panicked, trapped, helpless or embarrassed.
Moyamoya disease
This rare disorder occurs when blood flow to the brain is blocked or narrowed and a tiny cluster of blood vessels forms at the base of the brain.
Enterovirus D68 and parechovirus: How can I protect my child?
Enterovirus D68 and parechovirus infections can lead to serious illness among children. Know the symptoms and what you can do.
Cardiomyopathy
This disease of the heart muscle makes it harder for the heart to pump blood to the rest of the body. Learn the different types and how they're treated.
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