[Hyperhidrosis as risk factor for tinea pedis].
BACKGROUND: The purpose of this study was to evaluate a possible association between tinea pedis (interdigital mycosis) and hyperhidrosis by a case-control-study. PATIENTS AND METHODS: 30 otherwise healthy patients (age 22-56 years, 30% female) with mycologically proven tinea pedis and 51 control patients were included. RESULTS: 53.3% of the patients with tinea pedis and 33.3% of the control-patients had focal hyperhidrosis defined by gravimetry (definition as > or =30 mg sweat/min) (p-value=0.08). To control for possible confounding variables a multivariate analysis was performed including possible risk factors such as gender, regular visits in sauna and/or swimming pools. Multivariate analysis found a 3.5-fold increased risk for patients with tinea pedis to have hyperhidrosis. CONCLUSION: The study supports an association between tinea pedis or interdigital mycosis and focal plantar hyperhidrosis and therefore lends credence to the treatment of hyperhidrosis in patients with tinea pedis.