First of all, thank you to the people who responded to the call on HU and Patient.info to participate in YOUR EARS: RESEARCH PROJECT.
RESULT OF ‘Your Ears’ RESEARCH GCA - 8th cranial nerve involvement.
As a result of a simple question asked at a PMRGCA support group meeting a few years ago about whether patients with GCA had experienced hearing loss, a question was asked on the PMR and GCA forums asking for more information from patients and the charity analysed the replies. The results of that pilot study were such that it was decided to approach the NHS with funding to carry out a proper study which was successful and the results were accepted for publication in early August this year.
For those of us who have some difficulty understanding medical papers (and that includes me). The paragraphs below were prepared by Eileen Harrison BSC (Hons) Physiology & Medical Translator on behalf of M R Smith ex-Chair of PMR & GCAuk North East Support (closed Oct 2018).
It has been reported in the past that cranial nerves may be affected by GCA - we are all familiar with the loss of vision that may be such a devastating feature of GCA when the optic nerve is affected but rarely do we think of the other functions that may be involved. The auditory or eight cranial nerve transmits sound and balance information from the inner ear to the brain. Damage to it may result in hearing loss and balance problems.
Sudden onset deafness had been seen on occasions in the past as a presenting feature in GCA patients. This study aimed to find out how common it is by asking patients to complete a questionnaire about their experiences of deafness, tinnitus, loss of balance and vertigo and to look at the relationship between them and their GCA diagnosis. Two hundred and fifty patients with a PMR diagnosis and 170 with a GCA diagnosis were contacted and in the end 317 patients were recruited. It was found that there was a higher incidence of symptoms which could be related to the parts of the ear concerned with balance and hearing in the GCA patients than those with PMR.
Hearing loss is twice as common in patients with GCA as those with PMR (just over half of GCA patients, just over a quarter of PMR patients). Deafness was found along with other symptoms in just over a third of GCA patients and almost half had hearing loss together with headache. More than half of the patients found the symptoms resolved once they were on steroid treatment.
The conclusion come to is that more than half of patients with GCA have symptoms that relate to the 8th cranial nerve being affected by the vasculitis. Patients seem to be more aware of this association than doctors despite there having been reports in the medical literature in the past so it seems to be important that doctors become more aware that patients may complain of these symptoms in GCA and this may result in earlier diagnosis and better outcomes for patients. Interestingly, such patients may go to the doctor sooner - even before the ESR and CRP blood markers rise because the systemic response has not yet begun. Past studies have been on small numbers of patients - this study is much bigger, meaning the results are statistically meaningful whilst, if anything, underestimating the incidence of ear-related symptoms in GCA.
END
The full report can be found be following this link rdcu.be/bOZXC
Clinical Rheumatology. Original Article:
Patient-reported involvement of the eighth cranial nerve in giant cell arteritis
Vadivelu Saravanan1&Susan Pugmire1&Mavis Smith1&Clive Kelly1
Received: 26 June 2019 /Revised: 29 July 2019 /Accepted: 8 August 2019#The Author(s) 2019
Now a request:
We ask for your help in spreading this information. If you have printer download the paper and take a copy to your Medical Team. Put it in an envelope and next time you have an appointment, take it and give it to them personally and say, “Please take the time to read this in order to help the next person who presents to you with suspected GCA to aid in diagnosis”. .
There is a new support group - PMR GCA UK North East Support Group e:mail pmrgca.org.uk
THANK YOU.