That creeping, crawling, tingling, or burning feeling in your legs when lying down or sitting may be restless leg syndrome (RLS). Learn what can help. READ MORE
Rett syndrome is a rare genetic disease. It causes developmental and nervous system problems, mostly in girls. Learn about symptoms and treatments. READ MORE
Learn about Reye syndrome, which affects the liver, brain, and other organs. It is rare, and is often in children who have just had a viral infection. READ MORE
Sciatica is a symptom of a problem with the sciatic nerve causing pain, weakness, numbness, or tingling. Read about causes, tests, and treatment. READ MORE
Seizures are caused by sudden, abnormal electrical activity in the brain. They can be mild or severe. Learn about the types, causes, and treatments. READ MORE
Learn about shingles (herpes zoster), which is a painful rash, often on one side of the body. It is caused by the same virus that causes chickenpox. READ MORE
Sleep apnea is a common disorder that causes your breathing to stop or get very shallow while you sleep. Discover sleep apnea symptoms and treatment. READ MORE
Getting a good sleep is vital to your health, but many Americans don't get enough. Learn about sleep disorders, treatments, and good sleep habits. READ MORE
Speech and communication disorders affect our ability to communicate. From saying sounds incorrectly to being unable to understand others talking. READ MORE
It can be hard to know if your child's speech or language delay is a problem. Read about the types of problems and how they are diagnosed and treated. READ MORE
Read about diseases of the spinal cord, the bundle of nerves running down the middle of your back. It carries signals between the brain and the body. READ MORE