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Browse our complete A-Z directory of healthcare terms and entities.
Showing 2 entries starting with "Z" of type "Conditions"
What is Zika virus? Zika virus is a type of virus that is spread by mosquitoes. The mosquitoes that carry Zika are most active during the day but can bite at night. You're more likely to get the virus if you travel to parts of the world where it's more common. This includes parts of...
Zollinger-Ellison syndrome is a rare condition in which a tumor called a gastrinoma forms in the pancreas or small intestine. The tumor releases a hormone called gastrin that causes production of excess stomach acid. Almost all people who have Zollinger-Ellison syndrome get an ulcer at some point, usually in the small...