Effect of Post-Radiofrequency Corticosteroid Injection on the Incidence of Post-Neurotomy Neuritis

Inclusion Criteria: 1. Adult patient who aged equal and over 18 years old 2. Patient who scheduled for cervical, thoracic, and lumbar medial branch RFN and sacral lateral branch RFN 3. Patient who communicated effectively, demonstrated good understanding of questions and provided appropriate responses Exclusion Criteria: 1. Contraindications to corticosteroids: Patients with a known allergy or hypersensitivity to dexamethasone or other glucocorticoids 2. Contraindications to local anesthetics: Patients with a history of severe allergic reactions to amide-type local anesthetics (e.g., bupivacaine) 3. Active Infection: Presence of localized infection at the planned injection site or systemic infection (sepsis) that may contraindicate the procedure 4. Coagulopathy: Patients with uncorrected bleeding disorders or those unable to safely discontinue anticoagulant/antiplatelet medications according to standard procedural guidelines 5. Pregnancy or Lactation: Pregnant or breastfeeding women, due to potential risks associated with radiation (fluoroscopy) and medication exposure 6. Recent Corticosteroid Exposure: Patients who have received systemic or local corticosteroid injections at the target site within the past 3 months, which may interfere with the study outcomes 7. Unstable Neurological Conditions: Patients with progressive neurological deficits or acute radiculopathy that requires urgent surgical intervention