Neomycin occasionally causes skin sensitization.
Ototoxicity (see WARNINGS section) and nephrotoxicity
have also been reported.
Adverse reactions have occurred with topical use of
antibiotic combinations. Exact incidence figures are not available since no
denominator of treated patients is available. The reaction occurring most often
is allergic sensitization. In one clinical study, using a 20% neomycin patch,
neomycin-induced allergic skin reactions occurred in two of 2,175 (0.09%)
individuals in the general population. In another study the incidence was found
to be approximately 1%.
The following local adverse events have been reported with
topical corticosteroids, especially under occlusive dressings: burning, itching,
irritation, dryness, folliculitis, hypertrichosis, acneiform eruptions,
hypopigmentation, perioral dermatitis, allergic contact dermatitis, maceration
of the skin, secondary infection, skin atrophy, striae, and miliaria.