Scalp Acupuncture for Stroke Sequelae: A Comparative Review of Major Methods and Deficit-Specific Applications

Introduction

Stroke sequelae encompass a broad range of persistent functional deficits after the acute cerebrovascular event. In the literature reviewed here, the most consistently studied categories are motor impairment/hemiparesis, spasticity, aphasia, balance and gait dysfunction, cognitive impairment, and mood disturbance; much less direct evidence is available for dysphagia, dysarthria, sensory loss, and neglect. Across these categories, scalp acupuncture (SA) is most often evaluated as an adjunct to rehabilitation rather than as a stand-alone therapy, and the evidence base is dominated by randomized trials and meta-analyses from China, with heterogeneous protocols and incomplete adverse-event reporting .

The overall picture is mixed but clinically important. A 2025 overview of seven systematic reviews concluded that SA may improve neurological deficit scores, motor function, and disability, but certainty was low to very low because of risk of bias, inconsistency, imprecision, and poor standardization of scalp localization and needling techniques . At the same time, particular subgroups—especially post-stroke hemiparesis, spastic hemiparesis, aphasia, and cognitive impairment—showed repeated signals of benefit when SA was added to conventional rehabilitation or other routine care .

This review compares the major scalp acupuncture systems used in rehabilitation—especially Jiao’s scalp acupuncture, Zhu’s scalp acupuncture, Yamamoto New Scalp Acupuncture (YNSA), and clinically relevant variants such as interactive dynamic scalp acupuncture (IDSA) and long-stay scalp acupuncture—and maps them to stroke sequelae categories. It also summarizes outcome measures, session parameters, proposed mechanisms, safety, and the limits of the literature.

Major scalp acupuncture systems used in stroke rehabilitation

A 2023 scoping review synthesized 19 scalp acupuncture systems from 87 publications and compared them within the Standard International Acupuncture Nomenclature Scalp Acupuncture (SIANSA) framework. That review is especially useful because it distinguishes the major systems by theory, number of areas, and how well their areas align anatomically with standardized scalp lines .

Jiao’s scalp acupuncture

Jiao’s system is the most deeply embedded in modern Chinese stroke rehabilitation literature. It combines traditional Chinese medicine (TCM), neuroanatomy, and neurophysiology, and is organized around functionally projected scalp zones such as motor, sensory, speech, and balance areas. In the scoping review, Jiao’s system had 16 areas, 11 of which anatomically corresponded to SIANSA lines . In a stroke protocol, the motor area of Jiao’s scalp acupuncture was described as the most widely used scalp treatment for motor dysfunction in ischemic stroke .

The most clinically important feature of Jiao’s system is its cortical projection logic. The motor area is mapped to the precentral gyrus, the sensory area to the postcentral gyrus, and language zones to speech functions; balance/vertigo-related zones are also used clinically . In the hemiparesis meta-analysis, most trials used contralateral motor (MS6) and sensory (MS7) scalp areas; one outlier trial used balance area (MS14) and appeared less effective than motor/sensory-area protocols . This is consistent with the broader pattern that Jiao-derived motor/sensory protocols dominate post-stroke motor recovery studies.

Zhu’s scalp acupuncture

Zhu’s scalp acupuncture is a later Chinese-American development that the 2023 scoping review characterizes as grounded in TCM theory and clinical experience, with a unique somatotopic representation of the body on the scalp . In that synthesis, Zhu’s system had 19 areas, 13 anatomically corresponding to SIANSA lines . The review emphasizes that Zhu’s system is not simply a copy of Jiao’s: it is a separate map with its own line structure and somatotopic logic .

The published stroke rehabilitation trial literature supports Zhu’s system mainly for limb motor dysfunction and general post-stroke recovery. A 2022 randomized trial found that acupuncture combined with modern rehabilitation improved Barthel Index, manual muscle testing, and simplified Fugl-Meyer scores more than body acupuncture plus rehabilitation in ischemic-stroke limb dysfunction . A more intensive Zhu-based long-stay protocol in acute ischemic stroke used 10–12 mm insertion depth, 24-hour retention, and treatment every two days for seven sessions over two weeks; it improved cerebrovascular reserve, Fugl-Meyer scores, and daily activities without serious adverse effects .

Yamamoto New Scalp Acupuncture (YNSA)

YNSA differs most sharply from Jiao and Zhu. The scoping review describes it as a Japanese system based on a somatotopic representation of the body on the scalp, distinct from Chinese cortical-projection systems . It had 26 areas in the review, with only 11 anatomically corresponding to SIANSA lines, and only three clinically corresponding in the stroke-relevant comparison table . That low anatomical overlap explains why YNSA is harder to standardize within Chinese scalp-acupuncture trial frameworks.

YNSA is clinically organized around basic points, Y points, parietal points, brain points, and aphasia points. The extracted stroke literature describes basic points A-F for cervical, shoulder, upper-limb, thoracic, and lower-limb regions, Ypsilon points tied to meridian categories, and aphasia/brain points for paralysis and speech disorders . In practical stroke rehabilitation, YNSA is most often used as an adjunct for broader functional recovery rather than a narrow single-deficit protocol.

Other clinically relevant systems and variants

Two clinically important variants deserve mention. First, interactive dynamic scalp acupuncture (IDSA) is a modernized, movement-coupled protocol that uses the motor-area line, usually the MS6 line, during active rehabilitation tasks . Second, long-stay scalp acupuncture is a Zhu-based retention strategy that extends needle dwell time far beyond conventional scalp acupuncture, aiming to enhance and prolong stimulation . These are best understood as protocol innovations built on the major systems rather than wholly separate systems.

Comparative summary of the major systems

System	Core theory	Main stroke-relevant scalp regions	Typical needling strategy	Best-documented stroke uses
Jiao’s SA	Cortical projection, TCM + neuroanatomy/neurophysiology	Motor, sensory, speech, balance/vertigo areas	Contralateral needling, strong stimulation, moderate retention	Hemiparesis, motor recovery, aphasia, gait/balance, sensory symptoms
Zhu’s SA	TCM + clinical experience, somatotopic body representation	Custom scalp lines/areas for motor and functional recovery	Often more intensive or long-stay protocols	Limb motor dysfunction, ADL recovery, spasticity, broader post-stroke function
YNSA	Somatotopic microsystem distinct from Chinese SA	Basic points, Y points, parietal points, aphasia/brain points	Point palpation, dry needling or permanent acupuncture	Functional recovery, mobility, QoL, chronic post-stroke syndrome
IDSA	Dynamic sensorimotor integration layered on scalp acupuncture	MS6 motor area, bilaterally	Needling synchronized with movement training	Lower-limb motor function, gait, balance

Stroke sequelae categories and the scalp acupuncture approaches most often applied

1) Motor impairment / hemiparesis

Motor impairment is the strongest and most mature evidence domain. A meta-analysis of 30 randomized controlled trials found that SA plus Western standard treatment significantly improved Fugl-Meyer Assessment scores in post-stroke hemiparesis, with 1-month and 3-month courses both superior to control and 3-month courses producing larger gains than 1-month courses . The same review noted that most trials used Jiao-derived motor and sensory areas, especially MS6 and MS7, and that protocols commonly involved contralateral scalp needling, 2–4 cm insertion depth, 0.5–2 hours retention, and 5–7 sessions per week .

The 2024 meta-analysis on post-stroke spastic hemiparesis reinforced this picture. Across 16 RCTs with 1249 patients, SA combined with rehabilitation improved spasticity, motor function, daily activities, and clinical efficacy; the modified Ashworth scale improved by roughly 0.56–0.60 points, the simplified Fugl-Meyer score improved by about 5.86 points, and the modified Barthel Index improved by about 5.79 points . The protocol in that review was again Jiao-like in practice: motor/sensory scalp areas opposite the paretic limb, 15–30° insertion angles, 2–4 cm depth, 0.5–6 hours retention, and daily or near-daily treatment over 4 weeks to 3 months .

Best-fit method: For hemiparesis and spastic hemiparesis, Jiao-derived motor/sensory-area scalp acupuncture remains the dominant and best-studied method. Zhu-based protocols also show benefit, but Jiao-derived MS6/MS7 protocols are more represented in the literature .

2) Balance and gait dysfunction

Balance and gait are usually studied within motor-recovery trials rather than as isolated outcomes. The strongest direct gait-focused study was a multicenter randomized controlled trial of IDSA in post-stroke hemiplegia. IDSA targeted the bilateral MS6 motor area, used 0.3 × 40 mm needles inserted at 15°–30°, rotated at 200 rpm for 3 minutes with 5-minute intervals while patients performed active movement, and was administered for 4 weeks . The intervention improved lower-limb motor function and gait more than comparator scalp-acupuncture protocols, and it increased functional connectivity density in the right supplementary motor area and right cerebellar lobule VIII, with those imaging changes correlating with Fugl-Meyer scores .

The broader hemiparesis meta-analysis also supports a motor-area approach, while noting that a trial using balance-area stimulation seemed less effective than motor/sensory-area stimulation .

Best-fit method: For gait and balance, the most compelling modern approach is IDSA layered on a Jiao-style motor area, with longer retention or more dynamic stimulation than traditional static scalp acupuncture .

3) Aphasia

Speech and language outcomes are a major non-motor indication for scalp acupuncture, and they are where Jiao-derived language zones and combined protocols are most visible. A 2019 meta-analysis of 32 RCTs found that scalp acupuncture, scalp-plus-tongue acupuncture, tongue acupuncture, and Jin’s 3-needle acupuncture all improved aphasia outcomes relative to traditional acupuncture or rehabilitation training, with scalp acupuncture showing better total effective rates than both traditional acupuncture and rehabilitation training alone . Scalp-plus-tongue acupuncture had especially strong results on the Aphasia Battery of China, including comprehension, oral expression, repetition, denomination, reading, and writing .

In the dysarthria literature, however, scalp acupuncture is not the leading method. A network meta-analysis of 47 RCTs found that combined acupuncture plus language rehabilitation performed best overall, followed by tongue and nape acupuncture, while scalp acupuncture ranked below those approaches for language recovery . This suggests that scalp acupuncture may be more useful in aphasia than in dysarthria, but that for speech disorders the broader acupuncture package matters more than scalp needling alone.

Best-fit method: Jiao-derived language areas and scalp-plus-tongue combinations appear most common and most favorable for aphasia; scalp acupuncture alone is less convincing for dysarthria than for aphasia .

4) Dysphagia

Dysphagia is a clinically important post-stroke sequela, but scalp-acupuncture-specific evidence is notably sparse. A recent overview of 19 systematic reviews/meta-analyses on acupuncture for post-stroke dysphagia explicitly reported that scalp acupuncture was not included as a dedicated intervention; instead, the field emphasized manual acupuncture, electroacupuncture, nape acupuncture, and acupressure, usually with swallowing rehabilitation therapy . The outcomes in that literature included the Water Swallowing Test, VFSS, Fujishima Dysphagia Scale, SSA, DOSS, PAS, and swallowing quality-of-life measures, but not scalp-specific subgroup findings .

Best-fit method: No scalp-acupuncture system can currently be said to be commonly applied to dysphagia based on dedicated evidence. If acupuncture is used for swallowing recovery, the literature more often supports nape or other non-scalp techniques than scalp acupuncture .

5) Sensory loss

Direct evidence for isolated sensory loss is limited. The hemiparesis literature includes sensory outcomes indirectly because Jiao-derived protocols commonly stimulate motor and sensory scalp areas together, but there is no robust scalp-acupuncture meta-analysis dedicated solely to sensory loss . In the broader somatosensory-deficit literature, only a minority of trials used scalp acupoints, and no strong scalp-specific subgroup effect was reported .

Best-fit method: Jiao-derived sensory-area stimulation is the main scalp approach when sensory symptoms are treated, but the evidence base is indirect and thin .

6) Neglect

Post-stroke neglect has been studied only sparsely. One trial cited in the hemiparesis review used long-lasting scalp acupuncture combined with rehabilitation training for unilateral spatial neglect, but the broader literature does not provide a dedicated scalp-acupuncture meta-analysis with neglect-specific outcomes .

Best-fit method: No single system is established. Long-lasting scalp acupuncture combined with rehabilitation is the closest repeatedly cited protocol, but the evidence is too limited for a confident preference .

7) Cognitive impairment and emotional sequelae

Cognitive and emotional sequelae are the strongest non-motor domains after motor recovery and aphasia. A 2024 meta-analysis of 28 RCTs and 1,995 patients found that combination scalp acupuncture improved post-stroke cognitive impairment across several measures: total effective rate, MoCA, MMSE, LOTCA, and P300 latency/amplitude . Effect sizes favored combination SA across several subgroup comparisons, and adverse events were rarely reported .

For post-stroke depression, a separate meta-analysis of 14 RCTs found that scalp acupuncture improved effective rate, Hamilton Depression Scale scores, and neurological deficit scores, and had fewer adverse events than Western medicine alone .

YNSA is especially notable in the functional/QoL domain. In a pilot randomized controlled trial of post-stroke rehabilitation, YNSA added to standard care improved sensory, motor, and functional scores over follow-up to 2 years, and Barthel Index scores rose from 4 ± 2 to 95 ± 4 in the acupuncture group . That makes YNSA one of the few scalp-acupuncture systems with explicit long-term functional and quality-of-life framing in stroke rehabilitation.

Best-fit method: For cognitive and emotional sequelae, combination scalp acupuncture and YNSA appear most relevant. SA has the strongest quantitative evidence for cognition, while YNSA has the clearest individualized microsystem rationale for broader post-stroke syndrome and quality-of-life recovery .

Treatment principles, session parameters, and intended outcomes

Jiao-style protocols

Jiao-derived trials usually target contralateral motor and sensory areas and seek restoration of paretic motor control, speech, or sensorimotor integration. In the hemiparesis meta-analysis, the typical protocol was a contralateral motor/sensory scalp approach with 2–4 cm depth, 0.5–2 hours retention, and 5–7 sessions per week; in the spastic hemiparesis meta-analysis, protocols ranged from 0.5–6 hours retention with 4 weeks to 3 months of treatment . The intended outcome is usually improved FMA, Barthel Index, walking, or neurological deficit scores .

Zhu-style protocols

Zhu-based protocols are often more intensive or prolonged than classic Jiao-style methods. The long-stay method trial used 10–12 mm insertion, 24-hour retention, and treatment every two days over 2 weeks, while a separate ischemic-stroke rehabilitation RCT combined Zhu’s scalp acupuncture with body acupuncture and rehabilitation to improve Barthel Index, manual muscle testing, and simplified Fugl-Meyer scores . The intended outcome is functional restoration of limb motor ability and daily participation .

YNSA protocols

YNSA is usually applied as a microsystem with palpation-guided point selection. The stroke pilot study treated YNSA as an adjunct to standard inpatient motor rehabilitation, and the scoping review described basic points, Y points, parietal points, brain points, and aphasia points as its core structure . The intended outcomes are broader than pure motor recovery: mobility, ADL, pain, flexibility, and quality of life .

IDSA protocols

IDSA adds dynamic movement to scalp needling. In the multicenter RCT, patients received bilateral MS6 stimulation with active limb movement during needling, and the trial linked improved gait and motor scores to increased functional connectivity in motor-network nodes . This suggests that dynamic coupling of acupuncture and task practice may be especially suitable for gait rehabilitation rather than static limb recovery alone .

Proposed mechanisms

The proposed mechanisms are plausible but remain inferential. The 2025 overview describes SA as operating through neurostimulation rather than meridian-only logic and notes that variable localization and needling methods may influence clinical effects . Neuroimaging studies summarized here support this hypothesis: a meta-analysis of fMRI studies linked acupuncture for stroke motor dysfunction to altered regional homogeneity in the basal ganglia, insula, premotor cortex, and primary motor cortex, suggesting both subcortical plasticity and cortical compensation .

The IDSA RCT provides an especially clear network-level example. It showed that stimulating MS6 while patients performed movement improved functional connectivity density in the right supplementary motor area and right cerebellar lobule VIII, and those imaging changes correlated with better Fugl-Meyer scores . The aphasia meta-analysis also proposed that scalp acupuncture may increase cerebral oxygen saturation, alter hormone levels, and improve cerebral blood flow . Taken together, these sources support a model in which scalp acupuncture may influence motor and language recovery through changes in sensorimotor network excitability, perfusion, and connectivity rather than through a single local peripheral effect .

Safety and adverse events

Safety reporting is reassuring but incomplete. An evidence mapping of 535 systematic reviews found that scalp acupuncture appeared in nine systematic reviews of acupuncture adverse effects, but reporting was too inconsistent for pooled safety conclusions; most acupuncture adverse events were mild and transient, and serious events were rare . Reported events included dizziness, bleeding, and erythema, usually resolving with rest or pressure .

Stroke-specific trials are consistent with that pattern. In the long-stay Zhu trial, two patients in the treatment group had mild dizziness and one had local bleeding; all resolved without serious sequelae, and no serious adverse reactions occurred . In the spastic hemiparesis meta-analysis, minor punctate bleeding or hematoma at needling sites was reported in one-third of the included studies and resolved with pressure . In the depression meta-analysis, scalp acupuncture had a lower adverse-event incidence than Western medicine alone .

The main safety limitation is not signal but reporting quality. Many reviews noted that only a minority of primary studies actively assessed adverse events, which makes the true comparative safety profile uncertain .

Guidelines and clinical positioning

Guidelines generally discuss acupuncture for stroke rehabilitation, but they rarely distinguish scalp acupuncture from acupuncture as a broader category. A narrative review of 49 clinical practice guidelines and treatment guidelines from 27 countries found positive recommendations for acupuncture in dysphagia, motor recovery, walking, balance, spasticity, cognitive disorder, and depression, but these recommendations were not scalp-specific . This matters because the guideline signal is supportive of acupuncture as an adjunct in selected sequelae, yet it does not establish that any single scalp system is superior.

For scalp acupuncture specifically, the evidence therefore remains mainly trial-based rather than guideline-driven. The literature supports its use most clearly for motor rehabilitation, spastic hemiparesis, aphasia, and some cognitive or emotional sequelae, while evidence is sparse or absent for isolated dysphagia, isolated dysarthria, isolated sensory loss, and neglect .

Conclusion

The most defensible conclusion from the current evidence is that scalp acupuncture is a heterogeneous family of interventions rather than a single therapy. Jiao’s scalp acupuncture is the dominant framework for post-stroke motor impairment and spasticity, especially when motor and sensory lines such as MS6 and MS7 are used. Zhu’s scalp acupuncture is also used mainly for limb motor dysfunction and often appears in more intensive or long-stay protocols. YNSA is the most distinct system anatomically and conceptually, and its stroke evidence is strongest for broader functional recovery and quality-of-life outcomes rather than narrowly defined hemiparesis alone .

Across sequelae categories, the most common pattern is simple: the more motor-centered the deficit, the more likely Jiao-derived or Zhu-derived scalp protocols are to be used; the more language-centered the deficit, the more likely scalp acupuncture is to be combined with tongue or other speech-oriented needling; and the more cognitive or emotional the deficit, the more likely combined scalp acupuncture or YNSA is to appear .

The literature also suggests that scalp acupuncture may work best when integrated with rehabilitation rather than used in isolation. Dynamic protocols such as IDSA and prolonged-retention protocols such as Zhu’s long-stay method are especially interesting because they couple scalp stimulation to task practice or longer neuromodulatory exposure .

Limitations

The available evidence has several important limitations. First, the literature is heavily concentrated in Chinese RCTs, which limits generalizability and raises concerns about publication and language bias . Second, scalp acupuncture is poorly standardized: systems differ in their scalp maps, localization methods, needle angles, depth, retention time, and whether stimulation is static or dynamic, which makes direct comparison difficult . Third, adverse-event reporting is incomplete, so safety conclusions are more cautious than the generally reassuring narrative suggests . Finally, several of the most promising findings come from combination therapy rather than scalp acupuncture alone, making it hard to isolate the specific contribution of the scalp component .

TLDR

• Best-supported uses: motor impairment/hemiparesis, spastic hemiparesis, aphasia, and cognitive impairment .
• Most common system for motor rehab: Jiao-derived motor/sensory scalp acupuncture (MS6/MS7-like protocols) .
• Most distinct system: YNSA, which uses basic points, Y points, parietal points, brain points, and aphasia points, and is especially associated with broader functional/QoL recovery .
• Where evidence is weak or absent: dysphagia, isolated dysarthria, isolated sensory loss, and neglect .
• Safety: usually mild local or transient events, but reporting is incomplete .