Chordal Dysgeusia

Chorda tympani in chronic inflammatory middle ear disease

“…It was also seen that the sour taste quality is less commonly affected on the diseased side as compared to other taste qualities. This finding provides an argument for extrachordal gustatory pathways for sour taste, as previously suggested by Celis-Blaubach 12 . He found that after stapedotomy, where chorda tympani was severed, almost 40 percent of patients kept an intact sour taste, whereas other taste qualities were damaged.…”

“…This finding provides an argument for extrachordal gustatory pathways for sour taste, as previously suggested by Celis-Blaubach. 12 He found that after stapedotomy, where chorda tympani was severed, almost 40 percent of patients kept an intact sour taste, whereas other taste qualities were damaged. Our study also revealed sour taste to be relatively resistant to damage.…”

Gustatory Function in Chronic Inflammatory Middle Ear Diseases

“…Thus, these patients would not exhibit altered taste caused by an inflammatory middle ear process. This idea is supported by Celis‐Blaubach, 20 who also provided data suggesting a possible extrachordal pathway. He investigated 52 patients before and after stapedectomy and found most subjects to have an altered taste function, especially when the chorda tympani was severed.…”

Selective taste disorder after temporal bone fracture

“…Although this alternative taste pathway has not attracted a lot of attention, several clinical studies suggest that rather than it accounting for all taste qualities, it was restricted to certain aspects such as sour or bitter. 6,7 Partial taste loss with preservation of sour and bitter taste qualities 1 could also be due to the respective taste fibers bypassing the middle ear in the way described earlier. Low and Redfern's very interesting report raises the question of the frequency of anatomical taste pathway variants and further underlines the necessity of prospective studies clarifying this issue.…”