Pressures Required to Produce Intradermal Wheals in Normal Human Subjects

Abstract

Conclusions

The pressures required to produce intradermal wheals in normal individuals varied from 1,000 to 3,200 mm Hg with a mean pressure of about 2,000 mm Hg. No consistent differences in wheal pressures were found between males and females, or among Whites, Negroes and Japanese.