Men may have mold on the surface of the body, but there are no conscious symptoms, when the mold and the normal flora in a state of coordination, so there is no certain pathogenicity, can be long-term symbiosis without any conscious symptoms. But in some causal conditions, such as lower immunity or normal flora is suppressed, then there will be a dysbiosis, and the symptoms of mycobacterial infection. Most men have mycobacteria are located on the surface of the body, mainly located around the external genitalia, within the foreskin, the most common yeast or Candida, long-term stay in the inner plate of the foreskin, the number is relatively small, and with the surrounding normal flora grow together, and does not produce any pathogenicity. So the patient does not have any conscious symptoms, but the local secretion examination or get local foreskin scale for examination can find yeast or other types of mold, in the body resistance or the role of other triggers, there may be symptoms of mycobacterial infection, which requires further antifungal or anti-mycotic treatment.