Introduction And Objectives: Multiple chemical sensitivity (MCS) is a disease due to a disproportionate systemic response to chemical agents presentin the environment. ts urinary manifestations are rare and poorly understood. We present a case with recurrent lower urinary tract symptoms (LUTS) and review these symptoms in Spanish and foreign publications.

Clinical Case: A 30-year-old woman was referred for study of recurrent lower urinary tract symptoms of 17 years of evolution, triggered by food, perfumes, cleaning products, cosmetics and bleach. Repeated analytical, radiological and functional tests were normal. We suspected that she might suffer from MCS and advised a study in Preventive Medicine. The patient consulted an Environmental Medicine Center, and was diagnosed as having gradeIII-IV/IV MCS.

Conclusions: This is the first case of MCS diagnosed from urinary clinical manifestations. Among the causes of LUTS we should also think of MCS.

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