Pregnancy problems
Learning Center
Umbilical hernia
Learn about this condition in which your intestines create a bulge near your navel.
Whooping cough
Learn more about the symptoms, causes, treatment of this highly contagious, vaccine-preventable lung infection.
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.
Slide show: Baby baths
Baby baths can be tricky. Find out how to safely clean your baby, step by step.
Triple X syndrome
Females with this genetic disorder have three X chromosomes instead of two. Symptoms can be mild or include developmental delays and learning disabilities.
Infectious diseases
Viruses, bacteria, fungi and parasites can all cause infection. Find out more about how to prevent and treat these conditions.
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