Chorea minor is a neurological disorder that affects muscle control. It is also known as Sydenham's chorea, Saint Vitus dance, and rheumatic chorea. These terms are often used interchangeably to describe the same condition. While the exact cause of chorea minor is unknown, it is thought to be linked to bacterial infections, such as strep throat. Symptoms of chorea minor include involuntary jerking or twitching movements, emotional instability, and muscle weakness. Treatment may involve medication to control the symptoms, as well as antibiotics to treat any underlying infection. It is important to consult a healthcare professional if you suspect you or someone you know is experiencing symptoms of chorea minor.