Brain and Nervous System

The central nervous system (CNS) is made up of the brain and the spinal cord. The central nervous system controls thought processes, guides movement, and registers sensations throughout the body.

Vitamin B12 Test

A vitamin B12 test measures the amount of vitamin B12 in the blood. The body needs this B vitamin to make blood cells and to maintain a healthy nervous system. Vitamin B12 is found in animal products such as meat, shellfish, milk, cheese, and eggs. Most people who eat animal products are not likely to develop vitamin…

Weakness and Fatigue

Weakness and fatigue are terms that are often used as if they mean the same thing. But in fact they describe two different sensations. It is important to know exactly what you mean when you say “I feel weak” or “I am fatigued” because it can help you and your doctor narrow down the possible causes of your symptoms…

West Nile Virus

What is West Nile virus? West Nile virus is a type of virus that is spread by mosquitoes. The infection it causes may be so mild that people don’t even know they have it. But in rare cases, West Nile leads to severe illness that affects the brain or spinal cord. People older than 50 are at the highest risk for serious…

Worried About Using Opioids?

In the past, opioids were used only for short periods for short-term pain or for cancer pain. Many experts now also use them for longer periods to treat chronic pain. You can take these drugs, which are sometimes called narcotics or opiates, to reduce pain and increase your functioning. Examples include fentanyl…

Wrist Splint for Carpal Tunnel Syndrome

A wrist splint is a brace that looks like a fingerless glove. It stabilizes your wrist in a straight and sometimes slightly bent-back position. Wearing a wrist splint minimizes pressure on the median nerve and allows you a period of “relative rest” from movements that make carpal tunnel syndrome worse. Think about these…