Yes, irritation can break the skin like that. Although herpes does not have to present as a blister, it usually does. Please do what you did the first times, namely show a doctor, who can order a herpes blood test if that seems appropriate. If you avoid unsafe sex, you may be able to save yourself from the anxiety you seem to have every time there is a skin change on the penis.
Best.
Dr. Rockoff
I meant to say that I had been masturbating excessively for a few days before the spot showed up...I thought I may have irritated myself...I know I did not clean up properly a few of the times...what it really looks like to me is that conditiona angular stomatitis that people get on the corners of their mouths
Dr. Rockoff