Sciatica Market, by Disease Type (Acute Sciatica, Chronic Sciatica, and Others), by Drug Class (Nonsteroidal Anti-Inflammatory Drugs, Oral Steroids, Anticonvulsant Agents, Tricyclic Antidepressants, Opioid Analgesics, and Others), by Route of Administration (Oral and Injectable), by Distribution Channel (Hospital Pharmacies, Retail Pharmacies, and Online Pharmacies), and by Region (North America, Europe, Asia Pacific, Middle East, Africa, and Latin America) - Size, Share, Outlook, and Opportunity Analysis, 2021 - 2028