Skip to content

Therapeutic Effects of Topical Herbal Medicine -Rhubarb Ointment on Rosacea

Therapeutic Effects of Topical Herbal Medicine on Rosacea

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05045469
Enrollment
24
Registered
2021-09-16
Start date
2021-08-04
Completion date
2024-08-04
Last updated
2025-04-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chinese Herbal Medicine, Rosacea

Brief summary

The aim of this study is to investigate the effects of topical herbal medicine in the patients with rosacea.

Detailed description

Rosacea is a chronic inflammatory disorder which affects the cheek, nose, chin, forehead and eyes. It is typically characterized by cutaneous signs such as flushing, erythema, telangiectasia, papules, and pustules in the face. The pathogenic mechanism of rosacea is unknown, and there is no cure for rosacea. The therapeutic approaches include oral medicine, topical medicine and surgical interventions depending on the different subtypes of rosacea. The recent study demonstrates that combination therapy may be more effectively improved the symptoms of rosacea. Dian dao san is a topical herbal compound for reducing the features as flushing, erythema, papules, and pustules for years. The investigators hypothesize that dian dao san can be more beneficial in treating the patients with rosacea and improving the quality of life.

Interventions

DRUGdian dao san

dian dao san and placebo will be used in the rosacea lesions twice a day for 6 weeks

Sponsors

Chang Gung Memorial Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
20 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Willing to sign inform consent * Aged above 20 years old with rosacea * No treatment for rosacea within 2 weeks

Exclusion criteria

* With malignant lesion in the rosacea lesion * Rosacea lesion with high risk of infection * Allergy to Chinese herbal medicine patch or ointment * Pregnancy

Design outcomes

Primary

MeasureTime frameDescription
Reduction of Flushing, Erythema, Telangiectasia, Papules, and Pustules6 weeksquantified by Investigator Global Assessment, IGA. IGA is used in the study for assessing the severity of rosacea ranging from 0 (clean) to 4 (most severe).

Secondary

MeasureTime frameDescription
Dermatology Quality of Life Index, DQoL6 weeksDQoL is a questionnaire-based scale designed to measure the impact of dermatological conditions on a patient's quality of life. It assesses various aspects, including symptoms, psychological well-being, social activities, and treatment-related effects. Scale Range:The DQoL consists of 10 questions, each scored on a scale from 0 to 3: 0 = Not at all, 1 = A little,2 = A lot,3 = Very much The total score ranges from 0 to 30, where higher scores indicate a greater negative impact of the skin condition on quality of life. Interpretation of Scale Scores: Total Score 0-1: No or minimal impact; 2-5: Mild impact; 6-10: Moderate impact; 11-20: Significant impact; 21-30: Severe impact Higher DQoL scores indicate worse quality of life due to the skin condition, while lower scores suggest minimal impact. Computation of Scores:DQoL total score is calculated as the sum of the 10 item scores. Unit of Measure: Scores on a scale should be used as the Unit of Measure if no other units apply.

Countries

Taiwan

Participant flow

Participants by arm

ArmCount
Group A (Dian Dao San Group)
Herbal medicine (dian dao san) will be applied to the lesions of rosacea twice a day. Subject will receive persistent treatment for 6 weeks. dian dao san: dian dao san and placebo will be used in the rosacea lesions twice a day for 6 weeks
12
Group B( Topical Medicine Without Therapeutic Effects)
Placebo (topical medicine without therapeutic effects) will be applied to the lesions of rosacea twice a day. Subject will receive persistent treatment for 6 weeks. dian dao san: dian dao san and placebo will be used in the rosacea lesions twice a day for 6 weeks
12
Total24

Baseline characteristics

CharacteristicGroup A (Dian Dao San Group)Group B( Topical Medicine Without Therapeutic Effects)Total
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants1 Participants1 Participants
Age, Categorical
Between 18 and 65 years
12 Participants11 Participants23 Participants
Age, Continuous41.08 years
STANDARD_DEVIATION 14.94
52.08 years
STANDARD_DEVIATION 10.93
46.58 years
STANDARD_DEVIATION 12.94
Race/Ethnicity, Customized12 Participants12 Participants24 Participants
Region of Enrollment
Taiwan
12 participants12 participants24 participants
Sex: Female, Male
Female
10 Participants8 Participants18 Participants
Sex: Female, Male
Male
2 Participants4 Participants6 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 120 / 12
other
Total, other adverse events
0 / 120 / 12
serious
Total, serious adverse events
0 / 120 / 12

Outcome results

Primary

Reduction of Flushing, Erythema, Telangiectasia, Papules, and Pustules

quantified by Investigator Global Assessment, IGA. IGA is used in the study for assessing the severity of rosacea ranging from 0 (clean) to 4 (most severe).

Time frame: 6 weeks

ArmMeasureValue (MEAN)Dispersion
Group A (Dian Dao San Group)Reduction of Flushing, Erythema, Telangiectasia, Papules, and Pustules1 score on a scaleStandard Deviation 0.43
Group B( Topical Medicine Without Therapeutic Effects)Reduction of Flushing, Erythema, Telangiectasia, Papules, and Pustules1.92 score on a scaleStandard Deviation 0.67
Secondary

Dermatology Quality of Life Index, DQoL

DQoL is a questionnaire-based scale designed to measure the impact of dermatological conditions on a patient's quality of life. It assesses various aspects, including symptoms, psychological well-being, social activities, and treatment-related effects. Scale Range:The DQoL consists of 10 questions, each scored on a scale from 0 to 3: 0 = Not at all, 1 = A little,2 = A lot,3 = Very much The total score ranges from 0 to 30, where higher scores indicate a greater negative impact of the skin condition on quality of life. Interpretation of Scale Scores: Total Score 0-1: No or minimal impact; 2-5: Mild impact; 6-10: Moderate impact; 11-20: Significant impact; 21-30: Severe impact Higher DQoL scores indicate worse quality of life due to the skin condition, while lower scores suggest minimal impact. Computation of Scores:DQoL total score is calculated as the sum of the 10 item scores. Unit of Measure: Scores on a scale should be used as the Unit of Measure if no other units apply.

Time frame: 6 weeks

ArmMeasureValue (MEAN)Dispersion
Group A (Dian Dao San Group)Dermatology Quality of Life Index, DQoL2.83 score on a scaleStandard Deviation 2.25
Group B( Topical Medicine Without Therapeutic Effects)Dermatology Quality of Life Index, DQoL6.25 score on a scaleStandard Deviation 4.49

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026