Fitness
Learning Center
Zollinger-Ellison syndrome
In this rare disease, tumors in the digestive tract cause excess production of a certain hormone. High levels of this hormone increase stomach acid, leading to peptic ulcers.
Zenker's diverticulum
Find out the symptoms of this condition, how it causes a bulge to form in the tube that connects the throat to the stomach and treatments.
Yips
Learn about what causes these involuntary wrist spasms that often frustrate golfers.
Yeast infection (vaginal)
Vaginal itching or burning could mean you have a yeast infection. Learn about other symptoms and effective treatments for this uncomfortable condition.
X-linked agammaglobulinemia
This genetic disease weakens the immune system, mainly in males, and leads to having infections often.
Wrist pain
Wrist pain can be caused by many types of problems, ranging from sprains to arthritis. An accurate diagnosis is crucial to determine the proper treatment.
Wrinkles
These lines in the skin are a natural part of aging that's also affected by sun exposure and smoking. Learn about prevention tips and treatment options.
Wolff-Parkinson-White (WPW) syndrome
This heart condition present at birth causes a fast heartbeat. Rarely, it can cause sudden cardiac death. Know the symptoms and how it's treated.
Wilson's disease
This inherited disease causes copper to build up in vital organs, especially the liver, brain and eyes. It's treatable when caught early.
Whooping cough
Learn more about the symptoms, causes, treatment of this highly contagious, vaccine-preventable lung infection.
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