Neurological means relating to the brain, spinal cord, and the network of nerves that run throughout your body. This system, called the nervous system, controls everything from your thoughts and movements to your heartbeat and breathing.

When doctors talk about neurological conditions, they mean problems affecting how the brain or nerves work. Someone might have a neurological disorder that affects their movement, like Parkinson's disease, or their memory, like Alzheimer's disease. A neurological exam tests things like reflexes, coordination, and whether you can feel a gentle touch on your arm.

The word comes from neurology, the branch of medicine focused on the nervous system. A neurologist is a doctor who specializes in treating brain and nerve problems. They might help someone recovering from a stroke or figure out why a patient has been experiencing severe headaches.

You might hear about neurological development in young children, which refers to how their brains grow and form new connections as they learn to walk, talk, and think. Scientists who study neurological processes investigate how billions of nerve cells communicate with each other, sending electrical and chemical signals faster than you can blink. Understanding neurological function helps us understand everything from why practice makes perfect to how we remember our favorite birthday party.