Vitamin D Level and Pain Type in Coccygodynia

  • End date
    Feb 28, 2022
  • participants needed
  • sponsor
    Sivas Cumhuriyet University
Updated on 3 October 2021
vitamin d


Coccygodynia is a painful clinical picture of the sacrococcygeal region.Pain in coccygodynia may be somatic, neuropathic or mixed. There are many studies that emphasize the relationship between vitamin D deficiency and pain.In this study, it is aimed to investigate the severity and type of pain, as well as the effect of vitamin D level on pain in patients with coccygodynia


There are different types of pain in coccygodynia. Patients may suffer from e somatic, neuropathic or mixed pain.Vitamin D plays an important role in the pathophysiology of pain. Vitamin D inhibits NO synthase (iNOS) in microglia and astrocytes. The importance of this is that nitric oxide (NO) is an important molecule in the development of neuropathic pain. NO production contributes to the maintenance of pain hypersensitivity. NO causes central sensitization and mechanical allodynia by increasing spinal cord posterior horn N-methyl-D-aspartate (NMDA) receptors.In the literature, it has been reported that low vitamin D level is associated with the severity of neuropathic pain in postherpetic neuralgia, diabetic neuropathy, rheumatoid arthritis and carpal tunnel syndrome, which cause neuropathic pain development.

Based on the above-mentioned data, in this study, I aimed to investigate the severity and type of pain, as well as the effect of vitamin D level on pain in patients with coccygodynia. Within the scope of the study, 51 patients with a diagnosis of coccygodynia will be recruited. Patients' age, gender, body mass index, duration of symptoms, etiology of coccycodynia, pain severity, pain type and blood vitamin D level will be recorded. Pain assessment (for discrimination between nociceptive, mixed and neuropathic pain) will be done with the painDETECT questionairre. Pain severity will be evaluated with Visual Analog Scale (VAS). Those with vitamin D levels < 20 ng/mL, 20-30 ng/mL, and 30 ng/mL will be grouped as deficiency, insufficiency and normal, respectively.The data will be entered into the SPSS (version: 22.0) IBM SPSS statistical package program. Arithmetic mean, standard deviation, min-max, median values will be given in the data obtained by measurement. Percentage and frequency distribution will be given in the data obtained by counting. In statistical evaluations, parametric tests will be used for normally distributed data, and non-parametric tests will be used for data not normally distributed. Relationships will be compared according to the Pearson or Spearman correlation coefficient. Chi-square test will be applied to categorical data. P<0.05 will be considered significant.

Condition Vitamin D Deficiency, Peripheral Neuropathy, Neuralgia, Pain, Vitamin Deficiency, Nociceptive Pain, neuropathic pain, Coccyx Disorder
Treatment Current blood vitamin D level and painDetect questionairre score will be detected
Clinical Study IdentifierNCT05047393
SponsorSivas Cumhuriyet University
Last Modified on3 October 2021


Yes No Not Sure

Inclusion Criteria

Diagnosed with coccygodynia
-70 years old
Having a vitamin D level determined
Agreement to take part in the study

Exclusion Criteria

Presence of known polyneuropathy
Presence of diabetes mellitus, renal failure, thyroid diseases
Taking vitamin D replacement therapy
Using any of the medications used in the treatment of neuropathic pain such as duloxetine, pregabalin, gabapentin and tramadol, Having undergone an interventional procedure for coccygodynia within 3 months before the evaluation
Clear my responses

How to participate?

Step 1 Connect with a study center
What happens next?
  • You can expect the study team to contact you via email or phone in the next few days.
  • Sign up as volunteer to help accelerate the development of new treatments and to get notified about similar trials.

You are contacting

Investigator Avatar

Primary Contact



Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

Learn more

If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

Learn more

Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

Learn more

Similar trials to consider


Browse trials for

Not finding what you're looking for?

Every year hundreds of thousands of volunteers step forward to participate in research. Sign up as a volunteer and receive email notifications when clinical trials are posted in the medical category of interest to you.

Sign up as volunteer

user name

Added by • 



Reply by • Private

Lorem ipsum dolor sit amet consectetur, adipisicing elit. Ipsa vel nobis alias. Quae eveniet velit voluptate quo doloribus maxime et dicta in sequi, corporis quod. Ea, dolor eius? Dolore, vel!

  The passcode will expire in None.

No annotations made yet

Add a private note
  • abc Select a piece of text from the left.
  • Add notes visible only to you.
  • Send it to people through a passcode protected link.
Add a private note