I have never had a cold sore in my life, nor been with anyone that i had observed to have one, however, about 6 years ago I did have an outbreak on my genitals after increasing the
dosage of
accutane, which i was on at the time, to the highest possible dosage. at first i thought it was a side effect of the drug, of which there was many, but then i had a slight burning sensation upon urination.