B02.22

Clinical Causes: Reactivation of the varicella-zoster virus in the trigeminal nerve Nerve damage caused by shingles affecting the facial region Age-related decline in immune system function Increased susceptibility in individuals with weakened immune defenses

Key Symptoms: Sharp, stabbing facial pain that can be intense Persistent aching or burning sensation in the face Pain often localized to one side of the face, typically along the distribution of the trigeminal nerve Sensitivity to touch or mild stimuli like wind or clothing Episodes of pain that may last from seconds to minutes, with some experiencing continuous discomfort In some cases, facial muscles may be affected, leading to weakness or twitching

Diagnosis Path: Diagnosis of postherpetic trigeminal neuralgia involves a detailed review of medical history, including previous shingles outbreaks. A physical examination focuses on assessing facial sensation and nerve function. Healthcare providers may recommend imaging studies, such as MRI scans, to rule out other conditions affecting the nerves or brain structures. Diagnosis largely depends on characteristic symptoms and history of herpes zoster in the facial area.

Treatment Protocols: Medications like anticonvulsants (e.g., carbamazepine), tricyclic antidepressants, or pain relievers Topical agents such as capsaicin cream or lidocaine patches Nerve blocks or injections to temporarily alleviate pain Physical therapy to improve nerve mobility and reduce discomfort In some cases, surgical procedures may be considered if medication management is ineffective