Cervical disc bulges can regress! Take a few minutes to check out this article by Dalton Urrutia, MSc PT with up to date research!
Spontaneous Regression of Herniated Cervical Disc
Spontaneous regression of herniated lumbar disc has been well established in the literature, but, not for cervical discs.
3 Proposed Mechanisms for Spontaneous Regressions of Discs:
Dehydration and shrinkage of the herniated nucleus pulposus.
Retraction of the protruded disc.
Recognized as a foreign body, leading to an inflammatory response, and subsequent disc resorption.
Sharma et al. (2021), published a case study and reviewed 75 cases of spontaneous regression of herniated cervical discs from the literature.