Yeah they can be spontaneous. And they are unfortunately a forever virus. :/ and the way how to prevent them also sucks XD. As they are pretty much linked to stress and like winter weather.
The best you can do is keep the area clean and most importantly DON'T TOUCH IT DIRECTLY... a gross reality is they can spread its best to just try and not irratate it or spread it else where :] and keep using the cream. It can help prevent it from coming to a head and or popping. Which then its both messy and just painful. Best of luck. I get them too. (And don't sweat it too much about 66 to 70% of the world population has cold sores...)
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Yes, looks like a cold sore, I would put regular cold sore medicine on it.
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