Clinical Trial to Evaluate UV-light-induced Allergic Skin Reactions After Application of Delgocitinib Cream

Key Inclusion Criteria: * Healthy subjects aged 18-64 years (inclusive). * Fitzpatrick skin type of I, II, or III. Exclusion Criteria: * Atopic dermatitis, eczema, psoriasis, acne, dermatitis solaris or suntan that could interfere with the test field evaluation, hyperpigmentation, multiple naevi, tattoos, blemishes, or dense body hair in the range of the test fields. * Any other skin disease or other visible skin condition noted on physical examination which in the investigator's opinion might interfere with the evaluation of the test field reaction. * Any history of or presence of cancerous or precancerous skin lesions in general including melanoma, lentigo maligna, basal cell carcinoma, dysplastic naevi or actinic keratoses. * History of or active or both photo-induced or photo-aggravated disease (e.g. cutaneous or lupus erythematodes, polymorphic light eruptions). * Use of any topical or systemic medication that could interfere with the trial objective within 2 weeks before randomisation until subject's end of trial. * Use of drugs that might cause photosensitising or phototoxic reactions within 4 weeks before randomisation until subject's end of trial. * Foreseeable intensive UV-light exposure to test fields within 4 weeks before randomisation until subject's end of trial (solar or artificial).