right The clinical appearance is considerably varied in both the orientation, number, depth and length of the<unk> pattern. There are usually multiple grooves/furrows 2–6 mm in depth present. Sometimes there is a large central furrow, with smaller<unk>  branching perpendicularly. Other patterns may show a mostly dorsolateral position of the<unk>  (i.e. sideways running grooves on the tongue's upper surface). Some patients may experience burning or soreness. Associated conditions<unk>  is seen in Melkersson–Rosenthal syndrome (along with facial nerve paralysis and granulomatous cheilitis). It is also seen in most patients with Down syndrome, in association with geographic tongue, in patients with oral manifestations of psoriasis, and in healthy individuals.<unk>  is also sometimes a feature of Cowden's syndrome.
Fissured tongue
Crenated tongue
Caviar tongue
Black hairy tongue
Overbite
Geographic tongue
Oedema glottidis
Onychomadesis