Final answer:
Sydenham's chorea may occur months after initial infection and is a neurological disorder caused by Group A Streptococcus infection.
Step-by-step explanation:
Sydenham's chorea may occur months after initial infection. It is a neurological disorder that is associated with Group A Streptococcus infection, which can cause symptoms such as involuntary movements, muscle weakness, and emotional changes. The exact timeframe for the onset of symptoms can vary, but it typically occurs several months after the initial infection.