Types segmentation classifies drugs by pharmacological class and mechanism of action. Antidepressants (TCAs, SNRIs, SSRIs) capture the largest share, leveraging central pain modulation and accounting for roughly 40% of prescriptions due to established efficacy and generic availability. Anticonvulsants (gabapentinoids, sodium‑channel blockers) follow with about 30%, favored for neuropathic pain relief and tolerability profiles. Opioids occupy a smaller, roughly 10% niche, constrained by regulatory scrutiny but still relevant for refractory cases. Topical agents (capsaicin, lidocaine patches) contribute around 8%, offering localized symptom control with minimal systemic exposure. Emerging biologics and disease‑modifying therapies—such as nerve‑growth factor modulators and gene‑editing approaches—represent the remaining 12%, reflecting early‑stage pipelines and premium pricing potential. Each type’s market contribution reflects clinical guidelines, safety considerations, and reimbursement dynamics, providing a granular view of how therapeutic diversity sustains overall market growth.