Infections, coeliac disease and some medications ... of multiple small furrows or grooves on the dorsal (top) surface of the tongue. These fissures can be shallow or deep, single or multiple.

Dr Claire Merrifield has issued a warning to anyone who notices they suddenly have 'tongue pimples' and why we even get them ...

Made up of delicate nerve and muscle fibers with four different types of taste buds sprawled across its surface ... or signs ...