Thank you for asking. If there are associated complaints of Itching, pain, burning while urinating, discharge at the penis opening, etc a likelihood of an infection is present. A recent history risky sexual intercourse is an important risk factor that needs to be considered. Considering the need for physical evaluation, you must visit and show yourself to a dermatologist or Sexologist. Your complaints are indicating any serious problems but if there is a possibility of infection, it should be assessed and treated timely.