###Human: I have 10 spots on penis for a long duration with no harm. Is it STD? ###Assistant: Hello. This was likely a wart only. Warts can have very varied morphology and most plausible explanation is for wart only. Because, considering it was a single lesion, was not painful or itchy, flesh colored and it persisted for a long time and resolved on its own. So all these factors favor it. Morphology can be variable. The negative factor was not sexually active. Although most common causes are sexual contacts, but significant number of individuals may have it with non-sexual contacts as well, it can be transmitted vertically during childbirth and remain dormant for a long time activating later in life. It can be transmitted with usual contacts and can be transmitted through clothing like underwear (if came in direct or indirect contact with infected individual clothing), sharing toilets, etc., can also transmit it. So being not sexually active is not a strong factor against it. Rest all causes like skin tags which would persist without treatment or fall off suddenly, PPP (pearly penile papules) would be numerous papules, other infectious causes would be short-lived and multiple lesions and symptomatic like painful tender or red. Malignancies are unlikely at this age and would progress. So the probability is high for wart only. I hope this helps.