Yes, the spinal cord is part of the central nervous system. Learn what it does, how it's built, and why that CNS classification matters for your health.
Four-month-olds typically need 14–16 hours of sleep daily. Learn how that breaks down between naps and nights, plus what to expect from the sleep regression.
Trichotillomania is a mental health condition involving compulsive hair pulling. Learn what causes it, how it's diagnosed, and what treatments can help.