Application-based tendonitis treatment drug segmentation distinguishes four demand clusters that collectively shape the 2023 market volume of USD 2.4 billion. Acute traumatic tendonitis, triggered by sports or occupational overuse, commands the largest share because patients require fast-acting NSAIDs and depot corticosteroids to regain mobility; payers readily reimburse these products, inflating segment revenues. Chronic degenerative tendonitis (e.g., rotator-cuff or Achilles tendinosis) drives repeat prescriptions of topical NSAIDs and biologic regenerative therapies, extending lifetime value per patient. Post-surgical tendonitis, though low in incidence, exhibits the highest per-patient drug spend as surgeons combine long-acting local anesthetics, sustained-release steroids, and prophylactic antibiotics. Finally, pediatric tendonitis remains niche, yet pricing is premium owing to the need for age-adapted, low-systemic-exposure formulations.