Jean-Marie Lachapelle is Professor Emeritus in the Department of Dermatology at Université Catholique de Louvain in Belgium. He is one of the foremost experts in patch testing and contact dermatitis.Howard Maibach, MD is an expert in contact and occupational dermatitis and sees patient at the Environmental Dermatosis Clinic, which is part of the Dermatology Clinic. His specialty is dermatotoxicology, or skin exposure toxicity; allergies and skin disorders; and dermatopharmacology or the study of medications for skin disorders. Dr. Maibach has been on the editorial board of more than 30 scientific journals and is a member of 19 professional societies, including the American Academy of Dermatology, San Francisco Dermatological Society and the Internal Commission on Occupation Health. He is a professor in the Department of Dermatology at UCSF.

• Introductory Remarks.- Part I Patch Testing.- 1 Pathophysiology of Allergic and Irritant Contact Dermatitis.- 2 Diseases for Which Patch Testing Is Recommended: Patients Who Should Be Investigated.- 3 Patch Testing Methodology.- 4 Baseline Series of Patch Tests.- 5 Photopatch Testing.- 6 The T.R.U.E. Test® Methodology.- 7 Additional Testing Procedures and Spot Tests.- 8 Clinical Relevance of Patch Test Reactions.- 9  Atopic Dermatitis, Irritant Contact Dermatitis, and Allergic Contact Dermatitis.- 10 Spectrum of Diseases for Which Prick Testing and Open (Non-prick) Testing Are Recommended: Patients Who Should Be Investigated.- 11 Methodology of Open (Non-prick) Testing, Prick Testing, and Its Variants.- Part III Testing in Cutaneous Systemic Immune-Related Adverse Drug Reactions: Interest and Limitations.- 12 Testing Procedures in Cutaneous Systemic Immune-Related Adverse Drug Reactions.- Appendices.- Appendix A: Additional Series of Patch Tests.- Appendix B: The InternationalContact Dermatitis Research Group.- Appendix C: A List of Companies Producing and/or Distributing Patch and/or Prick Test Materials and/or Allergens.

Jean-Marie Lachapelle is Professor Emeritus in the Department of Dermatology at Université Catholique de Louvain in Belgium. He is one of the foremost experts in patch testing and contact dermatitis.Howard Maibach, MD is an expert in contact and occupational dermatitis and sees patient at the Environmental Dermatosis Clinic, which is part of the Dermatology Clinic. His specialty is dermatotoxicology, or skin exposure toxicity; allergies and skin disorders; and dermatopharmacology or the study of medications for skin disorders. Dr. Maibach has been on the editorial board of more than 30 scientific journals and is a member of 19 professional societies, including the American Academy of Dermatology, San Francisco Dermatological Society and the Internal Commission on Occupation Health. He is a professor in the Department of Dermatology at UCSF.

• Introductory Remarks.- Part I Patch Testing.- 1 Pathophysiology of Allergic and Irritant Contact Dermatitis.- 2 Diseases for Which Patch Testing Is Recommended: Patients Who Should Be Investigated.- 3 Patch Testing Methodology.- 4 Baseline Series of Patch Tests.- 5 Photopatch Testing.- 6 The T.R.U.E. Test® Methodology.- 7 Additional Testing Procedures and Spot Tests.- 8 Clinical Relevance of Patch Test Reactions.- 9  Atopic Dermatitis, Irritant Contact Dermatitis, and Allergic Contact Dermatitis.- 10 Spectrum of Diseases for Which Prick Testing and Open (Non-prick) Testing Are Recommended: Patients Who Should Be Investigated.- 11 Methodology of Open (Non-prick) Testing, Prick Testing, and Its Variants.- Part III Testing in Cutaneous Systemic Immune-Related Adverse Drug Reactions: Interest and Limitations.- 12 Testing Procedures in Cutaneous Systemic Immune-Related Adverse Drug Reactions.- Appendices.- Appendix A: Additional Series of Patch Tests.- Appendix B: The InternationalContact Dermatitis Research Group.- Appendix C: A List of Companies Producing and/or Distributing Patch and/or Prick Test Materials and/or Allergens.

Jean-Marie Lachapelle is Professor Emeritus in the Department of Dermatology at Université Catholique de Louvain in Belgium. He is one of the foremost experts in patch testing and contact dermatitis.Howard Maibach, MD is an expert in contact and occupational dermatitis and sees patient at the Environmental Dermatosis Clinic, which is part of the Dermatology Clinic. His specialty is dermatotoxicology, or skin exposure toxicity; allergies and skin disorders; and dermatopharmacology or the study of medications for skin disorders. Dr. Maibach has been on the editorial board of more than 30 scientific journals and is a member of 19 professional societies, including the American Academy of Dermatology, San Francisco Dermatological Society and the Internal Commission on Occupation Health. He is a professor in the Department of Dermatology at UCSF.

• Introductory Remarks.- Part I Patch Testing.- 1 Pathophysiology of Allergic and Irritant Contact Dermatitis.- 2 Diseases for Which Patch Testing Is Recommended: Patients Who Should Be Investigated.- 3 Patch Testing Methodology.- 4 Baseline Series of Patch Tests.- 5 Photopatch Testing.- 6 The T.R.U.E. Test® Methodology.- 7 Additional Testing Procedures and Spot Tests.- 8 Clinical Relevance of Patch Test Reactions.- 9  Atopic Dermatitis, Irritant Contact Dermatitis, and Allergic Contact Dermatitis.- 10 Spectrum of Diseases for Which Prick Testing and Open (Non-prick) Testing Are Recommended: Patients Who Should Be Investigated.- 11 Methodology of Open (Non-prick) Testing, Prick Testing, and Its Variants.- Part III Testing in Cutaneous Systemic Immune-Related Adverse Drug Reactions: Interest and Limitations.- 12 Testing Procedures in Cutaneous Systemic Immune-Related Adverse Drug Reactions.- Appendices.- Appendix A: Additional Series of Patch Tests.- Appendix B: The InternationalContact Dermatitis Research Group.- Appendix C: A List of Companies Producing and/or Distributing Patch and/or Prick Test Materials and/or Allergens.