Erythema Multiforme Following Topical Minoxidil

    November 1993 in “ Indian Journal of Dermatology Venereology and Leprology ”
    K Pavithran
    TLDR Minoxidil can cause erythema multiforme, even if patch tests are negative.
    A case was reported in 1993 of a male developing erythema multiforme after using topical minoxidil for androgenetic alopecia. The condition recurred upon reapplication of the minoxidil solution and also after taking minoxidil orally, confirming the drug as the cause. However, a patch test with minoxidil was negative, indicating a complex reaction mechanism.
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