Infant health
Learning Center
Mumps
Find out more about the symptoms and treatment of this viral illness and how vaccines can prevent it.
Rett syndrome
This rare genetic disorder affects the way the brain develops, causing a progressive inability to use muscles for eye and body movements and language.
Toe walking in children
Walking on toes or the balls of the feet is fairly common in children who are learning to walk. Most children outgrow it.
Video: Allergy tests
What happens in an allergy test? Watch this video and find out.
Video: Colonoscopy
See what a doctor sees when you undergo an examination of your colon.
Video: Sentinel node biopsy for melanoma
Video shows sentinel node biopsy to determine whether melanoma has spread.
Video: Skin cancer — How skin cancer develops
Watch this video to see what melanoma and nonmelanoma skin cancers look like and how they develop.
Video: Endoscopy
An endoscopy allows your doctor to view your esophagus, stomach and part of the small intestine. Here's how it works.
Infant development: Milestones from 7 to 9 months
Milestones for most 7- to 9-month-old infants include improved motor and language skills.
Infant development: Milestones from 10 to 12 months
Budding curiosity drives infant development between ages 10 and 12 months.
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