you've need to be seen and properly examined. many things it could be but herpes would not cause issues only when erect or when using a condom.
grace
hii grace can this be a yeast infection.this has been going on since 1 year now.can i have herpes without any boils or sores.i have this burning almost all the time and whenever i get an erection and my pennis touches my boxer shorts it starts burning.
This doesn't sound like herpes going on. follow up on it with your doctor.
grace