👉 Synkinesia is a neurological condition characterized by involuntary, repetitive muscle movements that occur in response to a specific stimulus. The exact cause of this condition is not fully understood but it has been suggested to be related to various brain disorders such as multiple sclerosis and Parkinson's disease. Synkinesia can lead to stiffness or pain in the affected muscles, which can affect movement and function. Synkinesia can manifest in different ways depending on the location, nature, and severity of the symptoms.