What is the sister disease to Parkinson's?
Could you please elaborate on the concept of a 'sister disease' and specifically what it refers to in the context of Parkinson's? Are there any other neurodegenerative disorders that are closely related to Parkinson's and share similar symptoms or causes? Additionally, how do researchers and medical professionals approach the treatment and management of these related diseases, and are there any emerging trends or advancements in this field?