A 12-year clinical observation by Tiandao TCM suggests that some trigeminal neuralgia may be related to postherpetic neuralgia from zoster sine herpete.

Trigeminal neuralgia is often described as knife-like, tearing, burning, electric, or needle-like pain. It is called the “worst pain in the world.” Many patients undergo CT and MRI scans, visit multiple hospitals, and still receive a diagnosis of “primary trigeminal neuralgia”—with no clear cause.

The currently accepted explanation is that vascular compression of the trigeminal nerve causes dysfunction and pain. Cases caused by tumors, inflammation, or trauma are called secondary trigeminal neuralgia. Because the cause is not fully understood, treatments are largely exploratory: microvascular decompression, radiofrequency thermocoagulation, balloon compression, gamma knife radiosurgery, and trigeminal rhizotomy. Some patients relapse after surgery or develop facial numbness. Medications such as carbamazepine can temporarily relieve pain but may bring new burdens with long-term use.

In 12 years of clinical practice, Tiandao TCM has observed that some patients diagnosed with primary trigeminal neuralgia have pain characteristics and distribution patterns highly similar to postherpetic neuralgia, yet no typical rash history. This suggests a possibility: zoster sine herpete.

After initial infection, the varicella-zoster virus lies dormant in nerve ganglia. When immunity fluctuates, it may reactivate. In most cases, it travels to the skin and causes visible blisters. In rare cases, it causes only nerve inflammation and microscopic damage without a rash. If the nerve damage does not fully heal, pain may persist or recur.

This observation suggests that if some trigeminal neuralgia originates from latent viral reactivation, treatment should not only block pain signals but also address the “latent pathogen” and nerve repair. This remains a clinical hypothesis requiring further research. Patients should not self-diagnose or imitate treatment.

FAQ

Q: Can herpes zoster occur without a rash?
A: Yes, it is possible. Zoster sine herpete is difficult to diagnose and requires comprehensive evaluation.

Q: What should trigeminal neuralgia patients do?
A: Seek evaluation at a regular hospital’s neurology or pain department first. Science articles cannot replace in-person consultation.