2nd order laboratory parameters – depending on the results of the history, physical examination, and obligatory laboratory parameters – for differential diagnostic clarification.
- Mycological examination (microscopic u. If necessary, cultural) of material from the margins of scaling foci, skin scrapings, nail material, etc. using sterile instruments (scalpel, sharp spoon, scissors, tweezers).
- Histological examination – useful in individual cases
- PCR (Polymerase Chain Reaction, PCR) – useful in individual cases.
