Introduction
Method and Technic
Time and Number of Tests
Observation after Tests
Types of Reactions
Immediate, Early and Delayed Reactions
"Positive" Reactions
Reactions to First and Later Tests Compared
Tests in Patients With and Without Arsphenamine Therapy
Intradermal Tests in Tolerant as Compared with Intolerant Patients
Tests in Patients without Arsphenamine Therapy
Intradermal Test as an Aid in Diagnosis and Prognosis of Complications from Arsphenamine Therapy
The Test in Diagnosis: Specificity
Reactions to Different Arsphenamines
Differences in Reaction to Arsphenamines and to Other Arsenical Preparations
Epidermal Reactions as Compared with Other Types
The Test in Prognosis
Syphilitic Patients not yet Treated with the Arsphenamines
Syphilitic Patients Previously Tolerant of the Arsphenamines
Sensitization and Desensitization
The Test as a Sensitizer
Reaction of Patients to Subsequent Intravenous Injections
Reaction of Patients to Repeated Intradermal Tests
Arsphenamine Dermatitis as a Phenomenon of Sensitization
Dermatitis after Few Injections and Small Doses
Polyvalent Sensitization
Rôle