Flutamide is a non-steroid antiandrogen used in advanced prostate cancer. This drug induces liver toxicity. Other side effects have been reported, especially four cases of photosensitivity. Our patient presented a sun-exposed eruption that disappeared when flutamide was discontinued and relapsed when it was rechallenged. Photopatch tests were negative. UVA MED was much lower during the treatment and the rechallenge of flutamide. The action spectrum of the drug seems to be in the UVA range. According to the literature, this photosensitivity is probably due to a photo-allergic mechanism.
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