This document provides a comprehensive list of conditions that can affect the central nervous system (CNS) or peripheral nervous system (PNS). It lists 50 conditions that impact the CNS, ranging from neurodegenerative diseases like Alzheimer's and Parkinson's to infections, tumors, and traumatic injuries. Another list outlines 42 peripheral nerve conditions, including diabetic neuropathy, carpal tunnel syndrome, muscular dystrophies, and injuries to specific nerves. The document serves as a reference for the variety of adult neurological conditions occupational therapists may encounter in clinical practice.