Sydenham's chorea, and its complications affecting the nervous system

Area of Science:

• Neurology
• Immunology
• Infectious Diseases

Background:

• Rheumatic fever and Sydenham's chorea present with distinct symptoms.
• Associated psychiatric and neurological disorders, including obsessive-compulsive disorder and attention deficit hyperactivity disorder, are linked to prior hemolytic streptococcal infections.
• Dystonic syndromes and acute disseminated encephalopathies may also be associated with post-infectious streptococcal illnesses.

Purpose of the Study:

• To discuss the causes and clinical spectrum of Sydenham's chorea and related post-infectious disorders.
• To explore the immunological basis, particularly immune reactivity against the basal ganglia.
• To review diagnostic approaches and treatment options.

Main Methods:

• Review of symptoms and associated disorders.
• Discussion of immunological mechanisms, including antibody presence against caudate nucleus neurons.
• Analysis of dopaminergic and cholinergic system imbalances.
• Consideration of differential diagnosis and imaging techniques.
• Evaluation of treatment strategies including prophylaxis, medications, and immunotherapy.

Main Results:

• Evidence suggests immune reactivity against the basal ganglia, with antibodies targeting caudate nucleus neurons, as a cause of Sydenham's chorea.
• An imbalance between dopaminergic and cholinergic systems is implicated in choreiform movements.
• Various drugs and immunotherapy show potential benefits in treatment.

Conclusions:

• Sydenham's chorea and associated neurological conditions are part of a spectrum of post-infectious streptococcal illnesses.
• Immune-mediated mechanisms targeting the basal ganglia play a significant role.
• Further research is needed to fully understand the links and optimize treatment strategies.