Incidence of neomycin and framycetin sensitivity.

A total of 450 consecutive patients were patch-tested to both neomycin and framycetin (20% in petrolatum). Thirteen patients were sensitive to both preparations, 10 to neomycin alone and four to framycetin alone. The significance of these results is discussed, with particular reference to the constituents of the preparations and the allergenic groups involved.