1.Compilation Instruction and Key Point Interpretation for Pharmacovigilance Guidelines for Clinical Application of Chinese Patent Medicines for Mucosal Administration
Wenzhe LI ; Rui MA ; Xiaoxiao ZHAO ; Hong HUA ; Xin CUI ; Yanming XIE ; Lianxin WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(8):260-266
To develop the Pharmacovigilance Guidelines for Clinical Application of Chinese Patent Medicines for Mucosal Administration in response to common problems, including insufficient safety information in package inserts, amplified medication risks in special populations, and non-standard clinical practices, thus establishing a risk management system tailored to the characteristics of Chinese patent medicines for mucosal administration. An approach combining qualitative and quantitative methods was adopted. In accordance with the Drug Administration Law of the People's Republic of China (2019 revision) and the GB/T 1.1—2020 standard, a systematic search was performed in the Chinese Pharmacopoeia (2020 edition), the Catalog of Medicines Covered by Medical Insurance (2022 edition), Chinese databases [China Network of Knowledge Infrastructure (CNKI), Wanfang Data (Wanfang), and VIP journal resource integration service platform (VIP)], and international databases (Cochrane Library, PubMed, and EMbase). Guideline outlines were developed through questionnaire surveys, expert interviews, and the nominal group technique. The content of each item was formulated with full consideration of traditional Chinese medicine (TCM) incompatibility, as well as the conceptual connotations and extensions of pharmacovigilance. The results included 54 Chinese patent medicines for mucosal administration from the Chinese Pharmacopoeia (2020 edition) and 58 from the Catalog of Medicines Covered by Medical Insurance (2022 edition). Safety-related items in the corresponding package inserts were collected, and 27 relevant publications were retrieved. Thirty experts from 24 institutions were mobilized for the drafting, and opinions from 61 external experts were solicited. A pharmacovigilance framework was established, covering the full chain of "monitoring, identification, assessment, and control". Based on seven anatomical sites, including nasal, ocular, and oral mucosa, a stratified monitoring system was constructed. The guideline proposed key recommendations on improving package insert sections such as "Adverse Reactions", "Contraindications", and "Precautions", clinical procedure standardization in healthcare institutions, risk control, and dynamic pharmacovigilance. The Guideline provides evidence-based support tailored to the risk profile of Chinese patent medicines for mucosal administration, filling the current gap in international pharmacovigilance standards in this field, while offering technical support for safety management across the full life cycle of medicines for mucosal administration.
2.Compilation Instruction and Key Point Interpretation for Pharmacovigilance Guidelines for Clinical Application of Chinese Patent Medicines for Mucosal Administration
Wenzhe LI ; Rui MA ; Xiaoxiao ZHAO ; Hong HUA ; Xin CUI ; Yanming XIE ; Lianxin WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(8):260-266
To develop the Pharmacovigilance Guidelines for Clinical Application of Chinese Patent Medicines for Mucosal Administration in response to common problems, including insufficient safety information in package inserts, amplified medication risks in special populations, and non-standard clinical practices, thus establishing a risk management system tailored to the characteristics of Chinese patent medicines for mucosal administration. An approach combining qualitative and quantitative methods was adopted. In accordance with the Drug Administration Law of the People's Republic of China (2019 revision) and the GB/T 1.1—2020 standard, a systematic search was performed in the Chinese Pharmacopoeia (2020 edition), the Catalog of Medicines Covered by Medical Insurance (2022 edition), Chinese databases [China Network of Knowledge Infrastructure (CNKI), Wanfang Data (Wanfang), and VIP journal resource integration service platform (VIP)], and international databases (Cochrane Library, PubMed, and EMbase). Guideline outlines were developed through questionnaire surveys, expert interviews, and the nominal group technique. The content of each item was formulated with full consideration of traditional Chinese medicine (TCM) incompatibility, as well as the conceptual connotations and extensions of pharmacovigilance. The results included 54 Chinese patent medicines for mucosal administration from the Chinese Pharmacopoeia (2020 edition) and 58 from the Catalog of Medicines Covered by Medical Insurance (2022 edition). Safety-related items in the corresponding package inserts were collected, and 27 relevant publications were retrieved. Thirty experts from 24 institutions were mobilized for the drafting, and opinions from 61 external experts were solicited. A pharmacovigilance framework was established, covering the full chain of "monitoring, identification, assessment, and control". Based on seven anatomical sites, including nasal, ocular, and oral mucosa, a stratified monitoring system was constructed. The guideline proposed key recommendations on improving package insert sections such as "Adverse Reactions", "Contraindications", and "Precautions", clinical procedure standardization in healthcare institutions, risk control, and dynamic pharmacovigilance. The Guideline provides evidence-based support tailored to the risk profile of Chinese patent medicines for mucosal administration, filling the current gap in international pharmacovigilance standards in this field, while offering technical support for safety management across the full life cycle of medicines for mucosal administration.
3.Genetic disease diagnosis and treatment in Shanghai: Survey and countermeasures for clinical genetics specialist training.
Xiaoju HUANG ; Lin HAN ; Li CAO ; Taosheng HUANG ; Duan MA ; Jian WANG ; Wenjuan QIU ; Fanyi ZENG ; Luming SUN ; Chenming XU ; Songchang CHEN ; Xinyu KUANG ; Hong TIAN
Chinese Journal of Medical Genetics 2026;43(4):241-247
OBJECTIVE:
To investigate the current status of clinical genetics specialization development and the diagnostic and therapeutic capabilities for hereditary diseases across medical institutions in Shanghai, and to assess the necessity and feasibility of establishing training bases for clinical genetics specialists.
METHODS:
By employing a cross-sectional survey design, the Clinical Genetics Committee of Shanghai Medical Association has conducted questionnaire surveys from March to April 2025 across 54 healthcare institutions in Shanghai (including 33 tertiary hospitals and 21 secondary hospitals). The survey involved administrative departments and medical personnel from 15 clinical specialties. The survey has covered current genetic disease diagnosis and treatment practices, relevant and specialised disease types, genetic department establishment, testing capabilities, personnel teams, and training requirements.
RESULTS:
The results revealed that 78.0% of clinical departments surveyed had treated patients with hereditary disorders. Shanghai possesses diagnostic and therapeutic expertise for over 95% of hereditary diseases listed in its rare disease catalogue, reflecting both the practical clinical demand for such conditions and the city's overall diagnostic and therapeutic strengths in this field. Nevertheless, significant disparities exist in the development of genetics departments across different tiers of healthcare institutions. Resources for genetic testing capabilities (including molecular, cellular, and biochemical testing) are also unevenly distributed across different tiers of hospitals. The survey further revealed that only 26.0% of departments believe that their current physician structure fully meets the diagnostic and treatment demands. Over 90% of departments consider standard training for clinical genetic specialists necessary, with 74.0% expressing willingness to participate in establishing training bases. Based on above findings and thorough deliberation, the Clinical Genetics Committee of the Shanghai Medical Association proposes advancing specialist training and discipline development through establishing a standard training system. The committee has drafted a three-year training protocol featuring a "joint training"-centered model, recommending a pilot-first, dynamically optimized strategy for steadily advancing training base development.
CONCLUSION
Shanghai faces substantial demand for genetic disease diagnosis and treatment, yet exhibits shortcomings in clinical genetics specialization development, resource allocation, and talent pipeline cultivation. To establish a standard training system holds significant practical importance and is underpinned by a broad demand.
Humans
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China
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Surveys and Questionnaires
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Genetic Diseases, Inborn/genetics*
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Cross-Sectional Studies
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Genetics, Medical/education*
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Genetic Testing
4.TGF-β1-engineered Biomimetic Platelet Nanoparticles for Targeted Therapy of Ischemic Stroke
Li-Qi CHEN ; Tian-Fang KANG ; Guo-Jun HUANG ; Ting YIN ; Ai-Qing MA ; Lin-Tao CAI ; Hong PAN
Progress in Biochemistry and Biophysics 2026;53(3):697-710
ObjectivePost-ischemic acute inflammation and the subsequent persistent dysregulation of the immune microenvironment represent major pathological drivers that aggravate neuronal injury and severely restrict functional recovery following ischemic stroke. Although current reperfusion therapies partially restore blood flow, they fail to effectively modulate the secondary inflammatory cascade and oxidative stress, which remain critical barriers to neurological restoration. To address this challenge, this study aimed to engineer and systematically evaluate a biomimetic nanosystem composed of transforming growth factor-β1 (TGF-β1)-loaded platelet membrane-camouflaged lipid nanoparticles (PLP). This nanosystem was designed to achieve dual lesion-targeted delivery and immune microenvironment remodeling. By verifying its spatiotemporal accumulation, anti-inflammatory activity, and neuroprotective efficacy, we sought to establish an integrated therapeutic strategy that simultaneously enables lesion targeting, immune regulation, and functional recovery after ischemic injury. MethodsThe physicochemical properties of PLP, including hydrodynamic particle size, zeta potential, structural stability, and morphology, were characterized using dynamic light scattering, zeta potential analysis, and transmission electron microscopy. The preservation of platelet membrane-derived adhesion and immunoregulatory proteins was confirmed by SDS-PAGE through comparative analysis of protein band profiles between PLP and native platelet membranes. The in vitro biological activities of PLP were evaluated using two complementary cellular models. LPS-induced M1-polarized RAW264.7 macrophages were employed to assess inflammatory modulation, while oxygen glucose deprivation/reperfusion (OGD/R)-induced BV2 microglial cells and SH-SY5Y neuronal cells were utilized to investigate neuroinflammatory regulation and neuronal protection. For in vivo validation, a transient middle cerebral artery occlusion (tMCAO) mouse model was established to mimic ischemia-reperfusion injury. The spatiotemporal biodistribution and lesion-targeting capability of the PLP were monitored through live fluorescence imaging. Therapeutic efficacy was comprehensively evaluated by triphenyltetrazolium chloride (TTC) staining, glial fibrillary acidic protein (GFAP) immunofluorescence analysis, body weight monitoring, and neurological severity score (NSS) assessment. ResultsPLP nanoparticles displayed a uniform spherical morphology, nanoscale particle size distribution, and stable negative surface charge, indicating favorable colloidal stability and circulation potential. SDS-PAGE results confirmed the effective retention of key platelet membrane proteins associated with endothelial adhesion, immune evasion, and inflammatory regulation, demonstrating the successful biomimetic construction. Optimal therapeutic concentrations were determined in OGD/R-induced BV2 cells, where PLP exhibited excellent cytocompatibility and anti-inflammatory activity.In vitro experiments demonstrated that PLP significantly inhibited the polarization of RAW264.7 macrophages toward the pro-inflammatory M1 phenotype and markedly reduced neuronal apoptosis under ischemia-reperfusion conditions. In vivo fluorescence imaging revealed that PLP rapidly accumulated in the ischemic brain hemisphere and maintained prolonged retention for up to 7 d, suggesting enhanced lesion-specific targeting and sustained drug release. Compared with control group, PLP treatment significantly reduced cerebral infarct volume, attenuated reactive astrogliosis, improved weight recovery, and accelerated neurological functional restoration, as reflected by significantly improved NSS scores. ConclusionThis study establishes a multifunctional biomimetic nanoplatform that integrates platelet membrane-mediated active targeting with the anti-inflammatory, antioxidative, and neuroprotective properties of TGF-β1. The PLP system enables rapid lesion homing and long-term retention while synergistically regulating the post-stroke inflammatory microenvironment by suppressing pro-inflammatory immune activation, reducing neuronal apoptosis, and limiting excessive astrocyte reactivity. Importantly, this study proposes a conceptually therapeutic paradigm that combines targeted delivery with immune microenvironment remodeling to achieve comprehensive neurovascular protection. These findings provide strong experimental evidence supporting the translational potential of biomimetic nanotherapeutics as next-generation precision interventions for ischemic stroke.
5.Screening of MLL fusion genes and rare breakpoint cases in patients with acute myeloid leukemia
Si LI ; Huanchen CHENG ; Zhanying WANG ; Wenpeng HAO ; Hong LIANG ; Jun MA
Chinese Journal of Hematology 2025;46(4):349-354
Objective:To screen for patients with mixed-lineage leukemia (MLL) fusion gene-positive with acute myeloid leukemia (AML), analyze the clinical characteristics and prognosis of patients with AML with positive fusion genes, and report two cases with rare breakpoint sites.Methods:This study included 287 patients with AML (non-acute promyelocytic leukemia) admitted to the Hematology and Oncology Research Center of Harbin First Hospital from October 2021 to October 2023. The cohort involved 157 males and 130 females, with a median age of 48 years (range: 19-80 years). All 287 patients underwent screening for 56 fusion genes and chromosome karyotyping analysis. Fluorescence in situ hybridization (FISH) and RNA seq were further performed on patients with negative fusion genes but positive 11q23.3 chromosomal translocation. Patient observation indicators included remission, recurrence, and others.Results:Among the 287 patients with AML, 15 were positive for the MLL fusion gene, with a positivity rate of 5.2%. Among the 11 types of MLL fusion genes detected, the most prevalent fusion types were MLL-ENL (4 cases), MLL-ELL (4 cases), MLL-AF9 (3 cases), and MLL-AF6 (3 cases). Of the 15 patients with positive MLL fusion gene, 2 demonstrated negative fusion gene while exhibiting positive chromosome and FISH. RNA-seq testing in these two patients revealed an uncommon breakpoint in the MLL fusion gene and a novel breakpoint fusion site, respectively. Complete remission (CR) was achieved in 6 patients with positive MLL fusion genes during the first chemotherapy cycle. After two cycles, eight patients achieved CR, with 50% of them experiencing recurrence within 2 months.Conclusion:RNA seq technology is useful for screening fusion genes with unconventional or novel cleavage sites, and patients with positive MLL fusion genes demonstrated a poorer prognosis.
6.Isokinetic sensorimotor training can improve hand function after a stroke
Jiang MA ; Yu LIU ; Hong LI ; Wanying SHI ; Xiaolin TAO ; Bei ZUO
Chinese Journal of Physical Medicine and Rehabilitation 2025;47(6):499-505
Objective:To observe the effect of isokinetic sensorimotor training on the hand function of stroke survivors.Methods:Forty-two stroke survivors with hand dysfunction were randomly divided into an isokinetic group of 22 and a control group of 20. Both groups were given sensorimotor training in addition to routine drug treatment and rehabilitation therapy, but the isokinetic group was additionally provided with sensorimotor training based on isokinetic techniques for 45 minutes daily, 5 days a week for 4 consecutive weeks. Before and after the intervention, both groups were evaluated using the Semmes-Weinstein monofilament examination (SWME), their two-point discrimination (2-PD) was documented, proprioception of their wrist joints was quantified, and the Fugl-Meyer upper extremity assessment (FMA-UE) and the simplified upper limb function assessment (STEF) were applied.Results:In both groups after treatment, there was a significant improvement in the SWME scores and 2-PD distance of the index finger and the thenar, and there was a significant decrease in the angle of motion perception (at 30° of flexion). The average FMA-UE and STEF scores of both groups had improved. After the treatment, the SWME scores of the index finger and the thenar, as well as well as the average FMA-UE and STEF scores of the isokinetic group were significantly higher than the control group′s averages. Angle of motion perception was also significantly superior.Conclusions:Sensorimotor training based on isokinetic techniques can significantly improve touch, motion sense, gross motor function and the fine motor ability of stroke survivors.
7.Consensus on informed consent for orthodontic treatment
Yang CAO ; Bing FANG ; Zuolin JIN ; Hong HE ; Yuxing BAI ; Lin WANG ; Haiping LU ; Zhihe ZHAO ; Tianmin XU ; Weiran LI ; Min HU ; Jinlin SONG ; Jun WANG ; Fang JIN ; Ding BAI ; Xianglong HAN ; Yuehua LIU ; Bin YAN ; Jie GUO ; Jiejun SHI ; Yongming LI ; Zhihua LI ; Xiuping WU ; Jiangtian HU ; Linyu XU ; Lin LIU ; Yi LIU ; Yanqin LU ; Wensheng MA ; Shuixue MO ; Liling REN ; Shuxia CUI ; Yongjie FAN ; Jianguang XU ; Lulu XU ; Zhijun ZHENG ; Peijun WANG ; Rui ZOU ; Chufeng LIU ; Lunguo XIA ; Li HU ; Weicai WANG ; Liping WU ; Xiaoxing KOU ; Jiali TAN ; Yuanbo LIU ; Bowen MENG ; Yuantao HAO ; Lili CHEN
Chinese Journal of Stomatology 2025;60(12):1327-1336
This consensus was developed by the Orthodontic Society of the Chinese Stomatological Association to provide a systematic, scientific, and practical guideline for informed consent in orthodontic care. Orthodontic treatment is typically lengthy, highly individualized, and involves multiple factors such as growth and development, occlusal function, and facial esthetics. Rapid technological advances and diverse risk profiles make the traditional reliance on orthodontist experience or institutional templates insufficient to ensure patients′ full understanding and autonomous decision-making. To address this, the expert panel conducted extensive reviews of domestic and international guidelines, analyzed representative dispute cases, and performed multicenter patient-clinician surveys. Using a multi-round Delphi method, the group established a standardized informed consent framework covering the initial consultation, treatment, and retention phases. The consensus emphasizes that informed consent is not only a fundamental legal and ethical requirement but also a key step in building trust, improving patient compliance, and enhancing treatment satisfaction. Orthodontists should clearly and comprehensively explain treatment plans, potential risks, uncertainties, and associated costs, while respecting the autonomy of patients or guardians, and maintain continuous communication and dynamic evaluation throughout the treatment process. The release of this consensus provides unified and authoritative guidance for clinical orthodontics, helping to standardize informed consent, enhance its transparency, safeguard patient rights, reduce medical risks, and promote high-quality, sustainable development of orthodontic practice.
8.Comparison of efficacy and safety of crisaborole ointment 2% versus pimecrolimus cream 1% in the treatment of mild to moderate atopic dermatitis in children: a multicenter, randomized, controlled clinical trial
Xing XIAO ; Shan WANG ; Huan YANG ; Hong SHU ; Yanping GUO ; Jinping CHEN ; Yao LU ; Qinfeng LI ; Yuan LIANG ; Mutong ZHAO ; Xiaoyan LUO ; Limin MIAO ; Rui XU ; Xuemei LI ; Sha LAI ; Jianhong LI ; Zhen LUO ; Lu YU ; Lu XING ; Meitan WANG ; Xiaoli LI ; Haitao XU ; Ping LI ; Hua WANG ; Lin MA
Chinese Journal of Dermatology 2025;58(5):425-430
Objective:To compare the efficacy and safety of crisaborole ointment 2% versus pimecrolimus cream 1% in the treatment of mild to moderate atopic dermatitis in children aged 2 years or older.Methods:A multicenter, randomized, open-label, controlled clinical trial was conducted. A total of 120 pediatric patients aged 2 - 17 years with mild to moderate atopic dermatitis were enrolled from departments of dermatology of 8 hospitals in China between March 2022 and February 2023. The participants were randomly assigned in a 1∶1 ratio to the crisaborole group and the pimecrolimus group, and received the treatment with crisaborole ointment 2% and pimecrolimus cream 1% respectively, twice a day for 4 weeks. Visits were scheduled at baseline/on day 1, as well as on days 8, 15, and 29. The primary efficacy outcome was the percentage of patients achieving the Investigator's Static Global Assessment (ISGA) success (defined as clear [0] or almost clear [1] on the ISGA scale, combined with ≥ 2‐grade improvement from baseline) on day 29. The secondary efficacy outcomes included changes in the Eczema Area and Severity Index (EASI) total scores from baseline to day 29, percentages of patients achieving ISGA improvement (defined as clear [0] or almost clear [1] on the ISGA scale), as well as changes in the Peak Pruritus Numerical Rating Scale (NRS) scores, Dermatology Life Quality Index (DLQI) /Infants' Dermatology Life Quality Index (IDLQI) /Children's Dermatology Life Quality Index (CDLQI) scores, and in the Dermatitis Family Impact (DFI) scores. Drug safety was evaluated according to the incidence of adverse events. Categorical data were compared using the chi-square test. Since measurement data did not follow a normal distribution, the rank sum test was used for comparisons of measurement data between groups.Results:A total of 106 children with mild to moderate atopic dermatitis were included in the per-protocol analysis set, with 52 in the crisaborole group (26 males and 26 females) and 54 in the pimecrolimus group (27 males and 27 females). There were no significant differences in age, disease duration, ISGA and EASI scores at baseline between the two groups (all P > 0.05). On day 29, 22 patients (42.31%) in the crisaborole group and 25 (46.30%) in the pimecrolimus group achieved ISGA success, with no significant difference between the two groups ( χ2 = 0.17, P = 0.68) ; 35 patients (67.31%) in the crisaborole group and 45 (83.33%) in the pimecrolimus group achieved ISGA improvement, also with no significant difference between the two groups ( χ2 = 3.68, P = 0.06) ; additionally, there were no significant differences in the EASI, pruritus NRS, DLQI/IDLQI/CDLQI, or DFI scores between the two groups (all P > 0.05). Adverse reactions to the two topical agents were mainly local reactions such as mild to moderate pain, itching, or worsening of itching, and no obvious systemic adverse reactions occurred. The incidence of drug-related adverse reactions was 46.15% (24 cases) in the crisaborole group and 37.04% (20 cases) in the pimecrolimus group, with no significant difference between the two groups ( χ2 = 0.91, P = 0.34) . Conclusion:The efficacy of crisaborole ointment 2% was comparable to that of pimecrolimus cream 1% in the treatment of mild to moderate atopic dermatitis in children aged ≥ 2 years, and it yielded early and rapid improvement in the quality of life of patients and their families, with good safety and tolerability profiles.
9.Development and preliminary application of the Treatment Burden Scale for patients with chronic heart failure
Mengqi MA ; Xiaohong ZHANG ; Hong HE ; Wenjing ZHANG ; Jianzhi LI
Chinese Journal of Nursing 2025;60(16):1948-1954
Objective To develop a Treatment Burden Scale for patients with chronic heart failure(CHF)and evaluate its reliability and validity,aiming to provide an effective tool for assessing treatment burden levels in this population.Methods According to Cumulative Complexity Model,the study was conducted in 2 phases.A preliminary item pool was established through literature review and semi-structured interviews,from August 2022 to March 2023,followed by expert consultation to finalize the initial scale.A convenience sample of CHF patients from 4 tertiary A hospitals in Hunan and Hubei provinces was conducted to refine scale items and assess psychometric properties,from June 2023 to April 2024.Results The final scale contained 26 items.Exploratory factor analysis revealed 6 domains,including family financial support burden,healthcare utilization burden,the challenges patients face in acquiring knowledge about proper medication use and water/sodium dietary management,the behavioral burden associated with tracking daily water/sodium intake and symptom patterns,psychological burden,and medication management burden,cumulatively explaining 68.661%of variance.Confirmatory factor analysis demonstrated satisfactory model fit;the x2/df was 2.076;the root mean square error of approximation was 0.070;the normed fit index was 0.912;the content validity score was 0.974.The total Cronbach's α coefficient of the scale was 0.903;the split-half reliability was 0.785;the test-retest reliability was 0.936.Conclusion The Treatment Burden Scale for CHF patients developed in this study has good reliability and validity psychometric properties,and it can be used to evaluate treatment burden levels and influencing factors in clinical practice.
10.Analysis of factors influencing frequent episodes in children with moderate-to-severe atopic dermatitis: a national multicenter cross-sectional study
Jing TIAN ; Yifeng GUO ; Xiaoyan LUO ; Yuan LIANG ; Ping LI ; Jinping CHEN ; Yao LU ; Jianping TANG ; Yunsheng LIANG ; Ying GAO ; Qiufang QIAN ; Hong SHU ; Hongxiang CHEN ; Pingshen FAN ; Xiuping HAN ; Hua QIAN ; Qinfeng LI ; Ming LI ; Shengchun WANG ; Ying LIU ; Hua WANG ; Lin MA
Chinese Journal of Dermatology 2025;58(10):943-951
Objective:To investigate factors influencing frequent episodes (≥ 4 episodes within 1 year) in children with moderate-to-severe atopic dermatitis (AD) in China.Methods:A national multicenter cross-sectional study was conducted. Patients under the age of 18 years diagnosed with moderate-to-severe AD were enrolled at dermatology clinics in 18 medical institutions across 12 provinces and municipalities in China between June 12 and August 8, 2023. At the time of the visit, their guardians completed a structured questionnaire covering demographic characteristics, clinical features of AD, personal and family history, factors associated with frequent episodes of moderate-to-severe AD, compliance with treatment, and disease awareness. Statistical analyses included t tests, one-way analysis of variance, rank-sum tests, and chi-square tests, with multiple-response analysis applied for multiple-choice questions. Results:A total of 965 valid questionnaires were collected, and 965 children with moderate-to-severe AD were included. Among them, there were 531 males and 434 females, 678 (70.3%) were aged 2 - < 12 years, 837 (86.7%) were from urban areas, the age at onset was 2.47 ± 3.03 years, and the median frequency of AD episodes in the past year was 4 times. These children were divided into 2 groups based on the median episode frequency: < 4-episode group (439 cases, 45.5%) and ≥ 4-episode group (526 cases, 54.5%). Compared with the < 4-episode group, children in the ≥ 4-episode group showed younger ages at onset (2.22 ± 2.98 years vs. 2.76 ± 3.06 years, P = 0.006) and higher proportions of patients with comorbid allergic diseases in both the children themselves (82.9% [436/526] vs. 69.7% [306/439], χ2 = 23.42, P < 0.001) and their relatives (66.0% [347/526] vs. 57.4% [252/439], χ2 = 7.46, P = 0.006). Children in the ≥ 4- episode group also had higher monthly usage of moisturizers (150 [30, 300] g vs. 60 [6, 200] g) and daily frequency of moisturizer use, greater disease awareness, but more severe fear of medication use (all P < 0.05). The region and the human development index level were both significantly associated with the episode frequency (both P < 0.001), with the highest proportion of children from South China in the ≥ 4- episode group (36.3%, 191/526). Children in the ≥ 4-episode group also had a longer duration of topical glucocorticoid use than those in the < 4-episode group ( Z = -2.21, P = 0.027). External triggers associated with AD episodes mainly included heat exposure (50.36%, 486/965), hot water bathing (40.73%, 393/965), seafood (23.52%, 227/965), and dust mites (33.37%, 322/965) . Conclusion:In children with moderate-to-severe AD in China, factors influencing frequent episodes may include residence in southern or economically developed regions, earlier age at onset, having a personal or family history of allergic diseases, and fear of medication use.

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