This article explains what neurological disorders are—conditions that affect the brain, spinal cord, and nerves—and how they disrupt communication in the nervous system to impact movement, sensation, thinking, and mood. It outlines common conditions such as stroke, epilepsy, migraine, Parkinson’s disease, multiple sclerosis, dementia, neuropathy, and traumatic brain injury, describing typical symptoms and when to seek care. Readers learn how these disorders are diagnosed (history, exams, imaging, and tests) and treated through medications, rehabilitation, devices, surgery, and lifestyle strategies. With a supportive, plain-language approach, it offers practical guidance for patients and caregivers to recognize warning signs, prepare for appointments, ask informed questions, and find credible resources for ongoing support.