主题词：Medicine and Dermatology Studies History; Dermatology and Skin Diseases; Medical History and Research; Autoimmune Bullous Skin Diseases; Libraries and Information Services; Psoriasis: Treatment and Pathogenesis; Acne and Rosacea Treatments and Effects; Cutaneous Melanoma Detection and Management; Nail Diseases and Treatments; German Literature and Culture Studies; Medical and Health Sciences Research; Urticaria and Related Conditions; Nonmelanoma Skin Cancer Studies; Cutaneous lymphoproliferative disorders research; Genetic and rare skin diseases.; Diverse Scientific and Economic Studies; Physics and Engineering Research Articles; Cancer and Skin Lesions; Historical Medical Research and Treatments; Skin Protection and Aging; Skin Diseases and Diabetes; Contact Dermatitis and Allergies; Hidradenitis Suppurativa and Treatments; Skin and Cellular Biology Research; melanin and skin pigmentation