Learn about the rodent-transmitted virus that causes severe — and sometimes fatal — lung disease with flu-like symptoms that can rapidly worsen.
Learn more about the symptoms, cause and treatment of this serious bacterial infection.
When your memory suddenly disappears, it can be frightening — but transient global amnesia is typically temporary and harmless.
Having an immediate reaction after drinking alcohol, such as a stuffy nose and skin flushing, might indicate alcohol intolerance.
Irregular connections between arteries and veins may cause certain complications. Learn more about the causes and possible treatment options.
Mixed connective tissue disease has signs and symptoms of multiple disorders, making it difficult to diagnose. There's no cure, but medications can help.
Not being able to fully digest the sugar (lactose) in milk can lead to diarrhea, gas and bloating after eating or drinking dairy products.
Get answers about where stem cells come from, why they're important for understanding and treating disease, and the ethics of using them.
Learn about this type of peripheral nerve tumor that can appear anywhere in the body, forming soft bumps on or under the skin.
Lots of things can cause bloody urine. Some are serious problems, and others are harmless. Find out why it's always important to get a checkup.