The Investigator's Global Assessment for chronic hand eczema (IGA-CHE) is an instrument used in clinical trials to rate the severity of the participant's global chronic hand eczema (CHE) and is based on a 5-point scale ranging from 0 (clear) to 4 (severe). IGA-CHE treatment success (IGA-CHE TS) is defined as an IGA-CHE score of 0 (clear) or 1 (almost clear) with a ≥2-step improvement from baseline.

The Hand Eczema Symptom Diary (HESD) is an eDiary in which participants will assess the worst severity of 6 individual signs and symptoms of CHE over the past 24 hours using an 11-point numeric rating scale with anchors of 0 ='no (symptom)' and 10 ='severe (symptom)' throughout the trial on a daily basis. This endpoint will only assess the 'itch' component and will be evaluated among participants with a baseline HESD itch score (weekly average) ≥4 points.

The Hand Eczema Symptom Diary (HESD) is an eDiary in which participants will assess the worst severity of 6 individual signs and symptoms of CHE over the past 24 hours using an 11-point numeric rating scale with anchors of 0 ='no (symptom)' and 10 ='severe (symptom)' throughout the trial on a daily basis. The HESD score is derived as the average of the 6 signs and symptoms. This endpoint will be evaluated among participants with a baseline HESD score (weekly average) ≥4 points.

The Investigator's Global Assessment for chronic hand eczema (IGA-CHE) is an instrument used in clinical trials to rate the severity of the participant's global CHE and is based on a 5-point scale ranging from 0 (clear) to 4 (severe). IGA-CHE treatment success (IGA-CHE TS) is defined as an IGA-CHE score of 0 (clear) or 1 (almost clear) with a ≥2-step improvement from baseline.

The Investigator's Global Assessment for chronic hand eczema (IGA-CHE) is an instrument used in clinical trials to rate the severity of the participant's global CHE and is based on a 5-point scale ranging from 0 (clear) to 4 (severe). IGA-CHE treatment success (IGA-CHE TS) is defined as an IGA-CHE score of 0 (clear) or 1 (almost clear) with a ≥2-step improvement from baseline.

The Hand Eczema Symptom Diary (HESD) is an eDiary in which participants will assess the worst severity of 6 individual signs and symptoms of CHE over the past 24 hours using an 11-point numeric rating scale with anchors of 0 ='no (symptom)' and 10 ='severe (symptom)' throughout the trial on a daily basis. This endpoint will only assess the 'itch' component and will be evaluated among participants with a baseline HESD itch score (weekly average) ≥4 points.

The Hand Eczema Symptom Diary (HESD) is an eDiary in which participants will assess the worst severity of 6 individual signs and symptoms of CHE over the past 24 hours using an 11-point numeric rating scale with anchors of 0 ='no (symptom)' and 10 ='severe (symptom)' throughout the trial on a daily basis. This endpoint will only assess the 'itch' component and will be evaluated among participants with a baseline HESD itch score (weekly average) ≥4 points.

The Hand Eczema Symptom Diary (HESD) is an eDiary in which participants will assess the worst severity of 6 individual signs and symptoms of CHE over the past 24 hours using an 11-point numeric rating scale with anchors of 0 ='no (symptom)' and 10 ='severe (symptom)' throughout the trial on a daily basis. This endpoint will only assess the 'itch' component and will be evaluated among participants with a baseline HESD itch score (weekly average) ≥4 points.

The Hand Eczema Symptom Diary (HESD) is an eDiary in which participants will assess the worst severity of 6 individual signs and symptoms of CHE over the past 24 hours using an 11-point numeric rating scale with anchors of 0 ='no (symptom)' and 10 ='severe (symptom)' throughout the trial on a daily basis. The HESD score is derived as the average of the 6 signs and symptoms. This endpoint will be evaluated among participants with a baseline HESD score (weekly average) ≥4 points.

The Hand Eczema Symptom Diary (HESD) is an eDiary in which participants will assess the worst severity of 6 individual signs and symptoms of CHE over the past 24 hours using an 11-point numeric rating scale with anchors of 0 ='no (symptom)' and 10 ='severe (symptom)' throughout the trial on a daily basis. The HESD score is derived as the average of the 6 signs and symptoms. This endpoint will be evaluated among participants with a baseline HESD score (weekly average) ≥4 points.

The Hand Eczema Symptom Diary (HESD) is an eDiary in which participants will assess the worst severity of 6 individual signs and symptoms of CHE over the past 24 hours using an 11-point numeric rating scale with anchors of 0 ='no (symptom)' and 10 ='severe (symptom)' throughout the trial on a daily basis. This endpoint will only assess the 'pain' component and will be evaluated among participants with a baseline HESD pain score (weekly average) ≥4 points.

The Hand Eczema Symptom Diary (HESD) is an eDiary in which participants will assess the worst severity of 6 individual signs and symptoms of CHE over the past 24 hours using an 11-point numeric rating scale with anchors of 0 ='no (symptom)' and 10 ='severe (symptom)' throughout the trial on a daily basis. This endpoint will only assess the 'pain' component and will be evaluated among participants with a baseline HESD pain score (weekly average) ≥4 points.

The Hand Eczema Symptom Diary (HESD) is an eDiary in which participants will assess the worst severity of 6 individual signs and symptoms of CHE over the past 24 hours using an 11-point numeric rating scale with anchors of 0 ='no (symptom)' and 10 ='severe (symptom)' throughout the trial on a daily basis. This endpoint will only assess the 'pain' component and will be evaluated among participants with a baseline HESD pain score (weekly average) ≥4 points.

The Hand Eczema Severity Index (HECSI) is an instrument used in clinical trials to rate the severity of 6 clinical signs (erythema, infiltration/papulation, vesicles, fissures, scaling, and oedema) and the extent of the lesions in each of the 5 hand regions (fingertips, fingers [except fingertips], palm of hands, back of hands, and wrists) by use of standard scales. The HECSI score will range from 0 (lowest possible score) to 360 (highest possible score), with a higher score indicating greater severity. HECSI-90 is defined as at least 90% improvement in HECSI score from baseline.

The Hand Eczema Severity Index (HECSI) is an instrument used in clinical trials to rate the severity of 6 clinical signs (erythema, infiltration/papulation, vesicles, fissures, scaling, and oedema) and the extent of the lesions in each of the 5 hand regions (fingertips, fingers [except fingertips], palm of hands, back of hands, and wrists) by use of standard scales. The HECSI score will range from 0 (lowest possible score) to 360 (highest possible score), with a higher score indicating greater severity. HECSI-75 is defined as at least 75% improvement in HECSI score from baseline.

The Hand Eczema Severity Index (HECSI) is an instrument used in clinical trials to rate the severity of 6 clinical signs (erythema, infiltration/papulation, vesicles, fissures, scaling, and oedema) and the extent of the lesions in each of the 5 hand regions (fingertips, fingers [except fingertips], palm of hands, back of hands, and wrists) by use of standard scales. The HECSI score will range from 0 (lowest possible score) to 360 (highest possible score), with a higher score indicating greater severity. HECSI-75 is defined as at least 75% improvement in HECSI score from baseline.

The Hand Eczema Severity Index (HECSI) is an instrument used in clinical trials to rate the severity of 6 clinical signs (erythema, infiltration/papulation, vesicles, fissures, scaling, and oedema) and the extent of the lesions in each of the 5 hand regions (fingertips, fingers [except fingertips], palm of hands, back of hands, and wrists) by use of standard scales. The HECSI score will range from 0 (lowest possible score) to 360 (highest possible score), with a higher score indicating greater severity.

The Dermatology Life Quality Index (DLQI) is a validated questionnaire consisting of 10 items addressing the participant's perception of the impact of their skin disease on different aspects of their quality of life over the last week. The DLQI score is the sum of the 10 items (score ranging from 0 to 30); a high score is indicative of a poor quality of life.

The Hand Eczema Symptom Diary (HESD) is an eDiary in which participants will assess the worst severity of 6 individual signs and symptoms of CHE over the past 24 hours using an 11-point numeric rating scale with anchors of 0 ='no (symptom)' and 10 ='severe (symptom)' throughout the trial on a daily basis. The HESD score is derived as the average of the 6 signs and symptoms.

The Hand Eczema Symptom Diary (HESD) is an eDiary in which participants will assess the worst severity of 6 individual signs and symptoms of CHE over the past 24 hours using an 11-point numeric rating scale with anchors of 0 ='no (symptom)' and 10 ='severe (symptom)' throughout the trial on a daily basis. This endpoint will only assess the 'itch' component.

The Hand Eczema Symptom Diary (HESD) is an eDiary in which participants will assess the worst severity of 6 individual signs and symptoms of CHE over the past 24 hours using an 11-point numeric rating scale with anchors of 0 ='no (symptom)' and 10 ='severe (symptom)' throughout the trial on a daily basis. This endpoint will only assess the 'pain' component.

The Hand Eczema Impact Scale (HEIS) addresses 9 items within the following domains: Proximal Daily Activity Limitations (PDAL), embarrassment with the appearance of the hands, frustration with CHE, sleep, work, and physical functioning. Each item is scored on a 5-point scale ranging from 0 (not at all) to 4 (extremely). The HEIS score is the average of the 9 items.

Proximal Daily Activity Limitations (PDAL) is one of the domain scores in Hand Eczema Impact Scale (HEIS) assessing the participant's perceived impact on their daily activities. Each item is scored on a 5-point scale ranging from 0 (not at all) to 4 (extremely). HEIS PDAL score is the average of the 3 items.

The Dermatology Life Quality Index (DLQI) is a validated questionnaire consisting of 10 items addressing the participant's perception of the impact of their skin disease on different aspects of their quality of life over the last week. The DLQI score is the sum of the 10 items (score ranging from 0 to 30); a high score is indicative of a poor quality of life. This endpoint will be evaluated among participants with a baseline DLQI score ≥4 points.

An adverse event (AE) were considered treatment emergent if started after the first application of investigational medicinal product (IMP), or if started before the first application of IMP and worsened in severity after first dose of IMP. End of trial was defined as Week 16 for participants who rolled over to the long-term extension trial and as Week 18 for participants who did not roll over.