I am currently deployed, no sexual activity for months, however during my shower I noticed a reddish/white/purplish circular blemish on the side of my penis, maybe 1/4 in diameter midway up the length. It s causing me to panic. It is not raised nor sensitive to the touch. It doesn t appear to have any fluid inside of it and it is easily distinguishable. The previous night I had attempted to masturbate, and I had no lubrication, and due to the environment I was running through my boxer briefs in a circular motion for several minutes. Could that have caused this or is it more serious?
Hi., Welcom to Chat Doctor .com I had gone through your question I can understand your concern. As per your history it seems to me it is traumatic bruise, that had happened because of the friction with rough surface. You don't need to worry about it will heal with a week. You must keep it Chat Doctor.  If the bruises start swelling or become painful or itchy you may need antibiotics like levofloxicin but in normal condition no need to take one. Hope the answer will be helpful to you, come back to us if you feel any further assistance. Regards