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2) Penis rash: If you've repeatedly revealed the penis tolatex, you may develop a penis allergy from the sensitivity. Usually, the Sphere Labs warning signs of a latex sensitivity will grow more serious with enhancecontact with the material. In other words, the more often you visibility thepenis to latex, the more serious your signs will be everytime the penis comesin contact with latex. After repeated use, a penis allergy may happen fromlatex contraceptives. A allergy triggered by a latex sensitivity will typicallybe red or pink and may flake when scratched.