Placebo tablets

HECSI is a measure of hand eczema disease severity considering the extent and intensity of the disease. Each hand is divided into five areas (fingertips, fingers (except the tips), palms, back of hands and wrists) and each area is graded on the intensity of six clinical signs: erythema, induration/papulation, vesicles, fissuring, scaling, and oedema. The grading scale used is: 0, no skin change; 1, mild disease; 2, moderate and 3, severe. The affected area for each location (total of both hands) are given a score from 0 to 4 (0, 0%; 1, 1-25%; 2, 26-50%; 3, 51-75% and 4, 76-100%) for the extent of clinical symptoms. Finally, the total sum of the intensity of the six clinical signs multiplied by the extent of each location is called HECSI score and it may vary from 0 to a maximum of 360 points, with higher scores reflecting greater disease severity. The score reflects HE severity as following: 1-16, mild HE; 17-37, moderate HE; 38-116 severe HE and 117-360, very severe HE.

HECSI is a measure of hand eczema disease severity considering the extent and intensity of the disease. Each hand is divided into five areas (fingertips, fingers (except the tips), palms, back of hands and wrists) and each area is graded on the intensity of six clinical signs: erythema, induration/papulation, vesicles, fissuring, scaling, and oedema. The grading scale used is: 0, no skin change; 1, mild disease; 2, moderate and 3, severe. The affected area for each location (total of both hands) are given a score from 0 to 4 (0, 0%; 1, 1-25%; 2, 26-50%; 3, 51-75% and 4, 76-100%) for the extent of clinical symptoms. Finally, the total sum of the intensity of the six clinical signs multiplied by the extent of each location is called HECSI score and it may vary from 0 to a maximum of 360 points, with higher scores reflecting greater disease severity. The score reflects HE severity as following: 1-16, mild HE; 17-37, moderate HE; 38-116 severe HE and 117-360, very severe HE.

HECSI is a measure of hand eczema disease severity considering the extent and intensity of the disease. Each hand is divided into five areas (fingertips, fingers (except the tips), palms, back of hands and wrists) and each area is graded on the intensity of six clinical signs: erythema, induration/papulation, vesicles, fissuring, scaling, and oedema. The grading scale used is: 0, no skin change; 1, mild disease; 2, moderate and 3, severe. The affected area for each location (total of both hands) are given a score from 0 to 4 (0, 0%; 1, 1-25%; 2, 26-50%; 3, 51-75% and 4, 76-100%) for the extent of clinical symptoms. Finally, the total sum of the intensity of the six clinical signs multiplied by the extent of each location is called HECSI score and it may vary from 0 to a maximum of 360 points, with higher scores reflecting greater disease severity. The score reflects HE severity as following: 1-16, mild HE; 17-37, moderate HE; 38-116 severe HE and 117-360, very severe HE.

The IGA-CHE rates the severity of the patient's global disease assessed by the physician and is based on a 5-point scale ranging from 0 (clear) to 4 (severe).

DLQI is a validated, self-administered, 10-item questionnaire that measure the impact of skin disease on patients' quality of life, based on recall over the past week. Domains include symptoms, feeling, daily activities, social, leisure, work or studying, personal relationships, and treatment. Each question is answered on a scale of 0 (not at all) to 3 (very much) and the total score may vary from 0 to 30.

The PaGA rates the severity of the patient's global disease assessed by the patient and is based on a 5-point scale ranging from 0 (clear) to 4 (severe).

NRS is a simple and commonly used numeric scale in which the patient rates patient symptoms such as pain, itch and sleeplessness on a scale from 0 (no pain, no itch, no sleeplessness) to 10 (worst pain, worst itch, worst sleeplessness).

NRS is a simple and commonly used numeric scale in which the patient rates patient symptoms such as pain, itch and sleeplessness on a scale from 0 (no pain, no itch, no sleeplessness) to 10 (worst pain, worst itch, worst sleeplessness).

NRS is a simple and commonly used numeric scale in which the patient rates patient symptoms such as pain, itch and sleeplessness on a scale from 0 (no pain, no itch, no sleeplessness) to 10 (worst pain, worst itch, worst sleeplessness).

NRS is a simple and commonly used numeric scale in which the patient rates patient symptoms such as pain, itch and sleeplessness on a scale from 0 (no pain, no itch, no sleeplessness) to 10 (worst pain, worst itch, worst sleeplessness).

NRS is a simple and commonly used numeric scale in which the patient rates patient symptoms such as pain, itch and sleeplessness on a scale from 0 (no pain, no itch, no sleeplessness) to 10 (worst pain, worst itch, worst sleeplessness).

NRS is a simple and commonly used numeric scale in which the patient rates patient symptoms such as pain, itch and sleeplessness on a scale from 0 (no pain, no itch, no sleeplessness) to 10 (worst pain, worst itch, worst sleeplessness).

NRS is a simple and commonly used numeric scale in which the patient rates patient treatment satisfaction on a scale from 0 (very unsatisfied) to 10 (very satisfied).

QOLHEQ is a validated, self-administered 30-question questionnaire that measures impairment of health-related quality of life (HRQoL) in patients with HE. Domains include symptoms, emotions, functioning and treatment/prevention. 0 (not at all) to 4 (all the time) and the total score may vary from 0 to 120. A QOLHEQ score greater than 86 is indicative of very strong impairment.

WPAI is a validated, self-administered questionnaire that measures the impact of CHE on work. Domains include time missed from work and impairment of work and regular activities due to CHE.

AE are any unfavorable and/or unintended sign or incident, symptoms or disease, whether related to roflumilast or placebo. This also includes laboratory results outside the reference range, though only laboratory results with clinical relevance will be examined. Any AE from the first administration of the trial medication to 8 days after the last administration of the trial medicine will be recorded, though unfavorable event reported in questionnaires will not be recorded as AE. SAE and SAR are any AE or adverse reaction that results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in persistent or significant disability or incapacity, or is a congenital anomaly of birth defect.

Exploratory outcome: Spirometry will be used to evaluate changes in lung function.

Spirometry is the most common pulmonary function test and measures forced expiratory volume during first second (FEV1) and forced volume capacity (FVC). The FEV1/FVC-ratio is used to diagnose obstructive and restrictive lung disease. The test is completed once two acceptable and reproductible measurements have been obtained. The test takes 5-10 minutes and is safe and non-invasive.

Exploratory outcome: change in NMF will be assessed using tape-strips.

Exploratory outcome: cytokine analyses by meso scale discovery (MSD) will be done to investigate changes in the epidermal barrier disruption through changes in cytokines (e.g. IL-10).Cytokine levels will be assessed using tape-strips.

Exploratory outcome: lipidomic profiling by high performance liquid chromatography (HP-LC) will be done. Ceramides will be assessed using tape-strips.

Exploratory outcome: subsequent microbiome characterization with 16S rRNA sequencing will be done. Changes in the skin microbiome is measured as relative abundance (%) of bacterial genera. Skin microbiome will be assessed using standard eSwaps.