There’s info in the Newbies Guide section:ES Information: Background, Anatomy, Styloid Length, Angulation, Classic and Vascular
'One Side or Bilateral?
Again, some doctors seem to be under the impression that you can only have symptoms one side, or that to have Bilateral ES is extremely, extremely rare, but we have seen on this site that many members have elongated styloid processes both sides, although often the symptoms one side are more severe.
Research papers showing the figures for this are:
In their study the authors found that 93% of people studied had bilateral elongation of the SP- Correl, Jensen, Taylor and Rhyne, 1979; Mineralization of the Stylohyoid-Stylomandibular complex.
In the study ‘Evaluation of the length and angulation of the Styloid process in the patient with pre-diagnosis of Eagle Syndrome- Kosar et al, 2011, Via Medica’, the authors found an incidence of 86% of patients with Bilateral elongation/ calcification.
In the article Eagle Syndrome by Dr Ian Bickle, Dr Gagandeep Singh et al, the authors state ‘It is often bilateral’.
Just a note – members with Bilateral elongated SP’s, but symptoms mainly one side have often found that following surgery on the worst side, the other side does become more symptomatic, so a second surgery is needed.
(see the section about surgery options for more info about having bilateral surgery).’
Hope this helps, & that you get somewhere with your appt. tomorrow!