Hello, I have a reoccurring problem with my tongue, I get a red patch in a certain place on my tongue that is slightly uncomfortable for the first two days but then it's alright. Also, it disappears after few weeks or months and reappears randomly again. I saw a dentist and I have no problems with my teeth. Here is the photo: http://postimg.org/image/o683pa9i3/.
Also I am female 21 years old.
i hope it's not dangerous or contagious.