**3. Epidemiology of dermatomycoses in Poland over the past decades**

Within the past decades changes in percentage of fungal infections and spectrum of dermatophytes were observed – in given geographical regions appear new species, replacing the existing ones. Migration of population, industrialization, economic and cultural development, ageing of society, increased percentage of diseases like diabetes, circulation disorders, antibiotic therapy or taking of immunosuppressive medicines - these are the factors that are conductive to this phenomenon. There is a close relation between mycological biota isolated from skin and its appendages and changing spectrum of dematophyte fungi in environment (Wronski & Nowicki, 2005).
