This is my first post on here, I have had a split at the corner of my mouth for a few weeks and it wouldn't heal, I have used cold Sore Creams and a cream called Daktarin Oral Gel as my dentist suggested that it was due to a dribble when I sleep which has caused an infection. This didn't work either.
I have just been to the doctors and he has reassured me it isn't a cold sore, it's something called a 'Fisher', and advised me to just use vaseline to keep the lips and that area moist and supple, as the other creams were drying it out, and then splitting when I opened my mouth or ate (there is no infection) I've never heard of a Fisher? but I will give the Vaseline a try. He asked if my bowels were okay and my periods which they are normal and i don't have periods any more, they were ruling out anemia which can cause splitting too.