Table 1.

Result of skin tests.

Before Procedure
Papule Diameter, mmPapule Diameter, mm
Histamine 10 mg/ml10 × 10
Saline solution44
HCQ
  20 mg/ml4242
  2.0 mg/ml3020
  0.2 mg/ml44
  0.02 mg/ml44
  0.002 mg/ml44
  • HCQ: hydroxychloroquine.