Acupuncture for Sydenham Chorea: Points, Techniques & Treatment

Sydenham chorea is often a manifestation of rheumatic fever, hence it is also known as rheumatic chorea or infectious chorea.

This disease is closely related to rheumatic disease; most patients have a history of Group A (streptococcal infection) within 1–6 months before onset.

A history of hemolytic streptococcal infection, or other rheumatic manifestations occurring around the time of onset or during the disease course—such as arthralgia, erythema, purpura, frequent sore throat, and rheumatic heart disease—is common. Many patients also have a family history of rheumatism. The condition typically resolves spontaneously within 2 to 6 weeks but has a high recurrence rate. Mental stress and pregnancy are major triggers of this disease.

The main pathological changes manifest as arteritis and neuronal degeneration in the basal ganglia, cerebral cortex, cerebellum, brainstem, substantia nigra, subthalamic nucleus, etc., accompanied by perivascular lymphocytic infiltration and occasional punctate hemorrhages or infarcts.

Diagnostic Key Points

This condition is most commonly observed in children aged 5–15 years, with a higher incidence in females than in males. In adults, it occurs only in pregnant women, particularly primiparae, where it is termed *chorea gravidarum*. Onset is gradual, but it may also be triggered suddenly by emotional agitation. In the early stage, affected children appear calmer than usual, with lapses in attention, emotional instability, clumsy movements, distorted handwriting, and a tendency to drop objects held in the hands. Gradually, mild involuntary movements appear in the face and fingers, becoming increasingly pronounced and eventually spreading to other parts of the body.

Involuntary movements vary in severity and often manifest as uncontrolled, changeable actions such as blinking, grimacing, tongue protrusion, forced smiles, shoulder shrugging, arm extension, and leg kicking. Occasionally, vocal sounds may be produced. Movements are more frequent in the upper limbs than the lower limbs. Involuntary movements of the face and trunk are bilateral, while those in the limbs may occur only on one side, known as hemichorea. All involuntary movements intensify during emotional stress and disappear during sleep.

Decreased muscle contractility, leading to easy fatigue; in severe cases, it may reach the level of hemiplegia. Voluntary movements exhibit ataxia, with inaccurate movements of the upper limbs; dysarthria and dysphagia occur, and lower limb instability can cause difficulty in walking. In a small proportion of patients, emotional instability is observed, including inappropriate laughing/crying, excitement, insomnia, and even mania, depression, or schizophrenia-like psychiatric symptoms.

**Examination:** In addition to involuntary movements, the following are observed: finger-to-nose test, alternating movements, and tandem gait are all impaired. In the upper extremities, when extending the arms, there is wrist flexion, extension of the metacarpophalangeal joints and fingers, and abduction of the thumb. When raising the arms above the head, pronation of the wrist is seen, termed the “pronator sign.” Muscle tone, even if not significantly reduced, cannot be sustained; there is a “waxing-and-waning sign” (when the child tightly grips the examiner’s hand, the examiner perceives the grip strength as intermittently tightening and loosening, lacking endurance). Deep tendon reflexes may be normal or diminished, and a “pendular reflex” may be present (i.e., when the child sits on the edge of the bed or table and the patellar tendon is tapped, the lower leg may swing several times before stopping).

Both superficial and deep sensations are normal. The ataxia is primarily characterized by impaired hand recovery movements.

Blood tests may show an elevated white blood cell count, increased erythrocyte sedimentation rate (ESR), positive anti-streptolysin O (ASO), and abnormal serum mucoprotein levels. CT and MRI can aid in differential diagnosis.

【Treatment】

I. Acupoints and Needling Techniques

1. Motor Area (healthy side or both sides): The upper point is located 0.5 cm posterior to the midpoint of the midline (from the glabella to the external occipital protuberance). The lower point is at the intersection of the eyebrow-occipital line and the anterior hairline. The line connecting these two points constitutes the Motor Area: the upper 1/5 governs the lower limb, the middle 2/5 govern the upper limb, and the lower 2/5 govern the face. Three 30-gauge, 1.5-cun filiform needles are used. After routine local disinfection, the needles are inserted with the tip directed downward, using the relay needling technique to cover the entire upper zone. Needling sensation: local distension and pricking pain in all three needles.

2. Sensory Area (contralateral or bilateral): located on a line parallel to and 1.5 cm posterior to the Motor Area. The upper 1/5 corresponds to the lower limb sensory area, the middle 2/5 to the upper limb sensory area, and the lower 2/5 to the facial sensory area. Use three 30-gauge, 1.5-cun filiform needles. Perform routine local disinfection. Insert the needles with the tips directed downward, using the relay needling method (successive insertion) to cover the entire area. Needle sensation: localized distention and stabbing pain in all cases.

**3. Dance and Tremor Area (Healthy side or bilateral):** Located on the parallel line 1.5 cm anterior to the Motor Area. Indications: Chorea, Parkinson’s disease (tremor paralysis). Procedure: Use two No. 30 filiform needles, 1.5 cun in length. After routine local disinfection, insert the needles with the tip directed downward and apply the relay needling technique (connecting puncture) to cover the entire area. Needle sensation: Local distension and pain.

4. **Taiyang (EX-HN5)** (bilateral): Located in the depression about 1 cun posterior to the midpoint between the lateral end of the eyebrow and the outer canthus. Use a gauge 30, 2 cun filiform needle. Perform routine local disinfection. Insert approximately 1.8 cun toward **GB8 (Shuaigu)**. Needle sensation: local distension and pain.

5. ST4 (Dicang) (bilateral): Located 0.4 cun lateral to the corner of the mouth. A 2-cun sterile needle (gauge 30) is inserted obliquely toward ST6 (Jiache) to a depth of approximately 1.8 cun. Sensation: local distension and soreness.

6. LI4 (Hegu) (bilateral): Located on the dorsum of the hand, between the 1st and 2nd metacarpal bones, approximately at the midpoint of the radial side of the 2nd metacarpal bone. A 30-gauge, 2-cun filiform needle is used. After routine local disinfection, insert the needle toward SI3 (Houxi) to a depth of approximately 1.8 cun. Needle sensation: Local distension and pain.

7. LI11 (Quchi), bilateral: With the elbow flexed and the hand held in a palm-up position (as if offering a salute), the point is located in the depression at the radial end of the elbow crease. Use a 30-gauge, 2-cun filiform needle; perform routine local disinfection; insert perpendicularly toward HT3 (Shaohai) to a depth of approximately 1.8 cun. Needling sensation: local distension and pain.

8. ST36 (Zusanli) (bilateral): Located 3 cun below ST35 (Dubi), one finger-breadth (middle finger) lateral to the anterior crest of the tibia. Use a 30-gauge, 2-cun filiform needle. After routine local disinfection, insert perpendicularly about 1.8 cun. Needling sensation: local distension and pain.

2. Methods

The patient takes a sitting or supine position. If chorea (Wǔdǎo Zhèng) appears only on the face and upper limbs, scalp acupuncture is not used; instead, only eight acupoints on the face and bilateral upper limbs are needled. If chorea involves the face and all four limbs and is severe, combine scalp acupuncture with the limb points. After accurately locating the selected points, insert the needles according to the standard method, retain for 40 minutes, and manipulate the needles once during retention. Treatment is given once daily, with 10 sessions constituting one course. Rest for 5 days before starting the next course.

Commentary

Patients with Sydenham chorea are mostly children. The needling depths mentioned above are appropriate for individuals aged 15 years and older; for children and thinner patients, shallower insertion should be applied as appropriate. Before needling, adequate psychological preparation of the pediatric patient is essential; the procedure should only be performed when the patient is emotionally stable and cooperative. Needle insertion should be as gentle and swift as possible. For this condition, the above method yields satisfactory therapeutic effects, especially in early-stage cases or those where choreiform movements are limited to the face, where the response is particularly rapid. Even for more severe cases (with choreiform movements in both the face and limbs), as long as the acupoints are accurately needled according to the method and treatment is carried out with patience, satisfactory results can be achieved.

Clinical Manifestations and Etiology of Sydenham Chorea

Sydenham chorea, also termed rheumatic chorea or infectious chorea, represents a major neurological manifestation of acute rheumatic fever. The condition typically emerges 1 to 6 months following an untreated infection with Group A streptococcus (Streptococcus pyogenes). Core Sydenham chorea rheumatic fever symptoms include involuntary, rapid, and irregular movements affecting the face, hands, and feet, often accompanied by muscle weakness, emotional lability, and obsessive-compulsive behaviors. Pathophysiologically, antibodies directed against streptococcal antigens cross-react with neuronal tissue, particularly in the basal ganglia, leading to inflammation and functional disruption. In many patients, a history of preceding pharyngitis, arthralgia, erythema marginatum, or other rheumatic stigmata can be elicited. The clinical course is variable, with symptoms frequently resolving spontaneously within weeks to months, yet relapses may occur, particularly during intercurrent infections or pregnancy. Accurate diagnosis relies on the Jones criteria for rheumatic fever, supported by evidence of recent streptococcal infection via serological testing (e.g., elevated anti-streptolysin O titers). Early recognition is critical to prevent neurological sequelae and to identify underlying rheumatic carditis, which can lead to permanent valvular damage.

Understanding Sydenham Chorea and General Management Principles

To answer the question what is Sydenham chorea and how is it treated, one must consider both its autoimmune etiology and symptomatic impact. Sydenham chorea is fundamentally a post-streptococcal autoimmune disorder of the central nervous system, characterized by choreiform movements and neuropsychiatric features. Management is multifaceted and begins with eradicating the inciting pathogen using antibiotic therapy (e.g., penicillin or amoxicillin) to prevent recurrence and limit further immune activation. Subsequent long-term secondary prophylaxis with monthly intramuscular benzathine penicillin G or daily oral penicillin is mandatory for all patients who have had rheumatic fever with chorea, often continuing into adulthood to reduce the risk of rheumatic heart disease. Symptomatic control is achieved with agents that modulate dopaminergic transmission, including dopamine receptor antagonists such as haloperidol or pimozide, or dopamine-depleting drugs like tetrabenazine. In mild cases, supportive care and environmental modifications may suffice, while severe or refractory cases may require immunosuppressive therapy, such as corticosteroids or intravenous immunoglobulin (IVIG). Importantly, treatment must be individualized based on symptom severity, age, and presence of comorbid rheumatic manifestations.

Evidence-Based Rheumatic Chorea Treatment Options

Contemporary rheumatic chorea treatment options extend beyond symptomatic dopamine modulation to include targeted immunomodulation. For moderate-to-severe chorea unresponsive to first-line agents, corticosteroids—most commonly prednisone or methylprednisolone—are employed to suppress the autoimmune inflammatory cascade. A typical regimen involves oral prednisone (1–2 mg/kg/day) tapered over several weeks, with studies demonstrating accelerated movement improvement. Intravenous immunoglobulin (IVIG) and plasma exchange represent alternative second-line therapies, particularly in patients with contraindications to steroids or in rapidly progressive cases. Additionally, valproic acid or carbamazepine may be utilized as mood stabilizers and anticonvulsants with some chorea-suppressing effects. Antibiotic prophylaxis remains the cornerstone of secondary prevention. Emerging evidence also suggests a potential role for the monoclonal antibody rituximab in refractory cases. Ultimately, management requires coordination among neurologists, rheumatologists, and cardiologists to address cardiac involvement, monitor for adverse effects, and optimize long-term outcomes. Further research is needed to establish standardized treatment protocols, given the condition’s rarity and variable natural history.