Correction: The original version of this article misstated the symptom checker's original launch date. WebMD, long the go-to for patients turning to the internet for an answer to mysterious symptoms, ...

While an isolated ache or a single symptom can be easy to ignore, a health expert warns that certain combinations are cause for alarm.

What is this pink bump on my arm? Search for symptoms, and you might click through to WebMD and other sites that can provide an overwhelming possibility of reasons for what’s ailing you.

Congenital adrenal hyperplasia (CAH) is a genetic condition affecting the adrenal glands. Learn about tests, treatment, and the outlook for your child.

Dyspraxia is a developmental disorder affecting coordination and motor skills, leading to difficulty with tasks like writing, balance, and planning movements.

A painful sore throat is a signature symptom of an Omicron subvariant called NB.1.8.1, or Nimbus. It now makes up about a third of U.S. COVID-19 cases. Find out what you can do to get relief.