Progressive Supranuclear Palsy (PSP) is a rare and complex brain disorder that affects movement, balance, vision, thinking, and behavior. Because many of its early symptoms resemble those of Parkinson's disease , PSP is often misunderstood or misdiagnosed in its early stages. For individuals living with PSP, and for their families, the condition can feel confusing and overwhelming. Learning to recognize the signs and understanding how the disease progresses can help people se