Median rhomboid glossitis (MRG, also known as central papillary atrophy, or glossal central papillary atrophy.) is a condition characterized by an area of redness and loss of lingual papillae, situated on the dorsum of the tongue in the midline immediately in front of the circumvallate papillae.
Strawberry Tongue and Glossitis. A tongue condition that's a lot like strawberry tongue is glossitis. It makes your tongue swollen and red but not bumpy. Like strawberry tongue, glossitis can show up as a side effect of different conditions. Both can be a sign of low B12, but glossitis is most likely a symptom of something that's not related to strawberry tongue.