No, not for certain. That's why your dermatologist wants to do a biopsy. This is appropriate, and the only way to be sure. If it's a basal cell, it will need to be treated anyway, but if it's an atypical mole (or a melanoma), it will need to be treated differently. That's the reason for doing the biopsy.
Take care.
Dr. Rockoff
I don't think these new symptoms are any more likely to be STD's than the old ones. I think irritation is much more likely. I advise you to leave the penis alone and show these spots to your doctor when you return, if they're still visible.
Thanks.
Dr. Rockoff
Your description does not sound like any disease at all, sexual or otherwise. It sounds to me as though you are looking much too hard at your penis and over-interpreting lots of minor skin changes that mean nothing. Please see a skin specialist in person, and if you find that there's nothing worng with you, accept it and move on.
Best.
Dr. Rockoff
Molluscum contagiosum. Your doctor can eliminate these for you by freezing them or applying a mild acid treatment.
Dr. Rockoff
I can't access your photo. These are most likely folliculitis (blocked follicles.) They may also be molluscum contagiosum--viral growths that are not regular genital (HPV) warts and are often not sexually-transmitted. In order to know for sure, you will need to show them to a doctor in person.
Thanks.
Dr. Rockoff