Forestier syndrome, also known as Diffuse Idiopathic Skeletal Hyperostosis (DISH), is a rheumatological disorder characterized by ectopic calcification and excessive bone formation in the ligaments and tendons, particularly along the spine. Due to its subtle clinical manifestations and overlap with degenerative spinal diseases, the condition is often underdiagnosed in primary care. Early recognition is crucial due to its association with increased risk of metabolic syndrome, vertebral fractures, and, rarely, dysphagia or myelopathy.A 61-year-old male presented with a 3-week history of progressive dorsal back pain, without accompanying symptoms of dysphagia, neurological deficits or radiation of pain. He denied any recent trauma.  He reported a history of self-resolving complaints of dysphagia ten years prior. No other significant past medical history was identified.  Physical examination revealed tenderness in the bilateral dorsal paravertebral muscles, but no pain was elicited upon palpation of the spinous processes of the vertebral bodies. There were no focal neurological deficits, and muscle strength and sensation in the lower extremities were intact bilaterally.   Plain x-rays of the thoracic spine revealed flowing ossification along the anterior longitudinal ligament spanning multiple contiguous vertebral bodies, with no evidence of fracture or acute osseous injury.  These radiographic findings are consistent with the diagnostic criteria for Forestier syndrome.This case report highlights the diagnosis of Forestier syndrome, emphasizing radiographic diagnostic criteria, clinical presentation, and the importance of early recognition to prevent potential complications.Forestier syndrome is an uncommon disorder in primary care and can be overlooked if its presentation and basic diagnostic criteria are unknown. Radiographic imaging is essential for diagnosis, as clinical symptoms can be mild or absent.Undiagnosed Forestier syndrome in primary care can result in progressive spinal stiffness and pain, often misattributed to more common spinal conditions, leading to suboptimal management. Hyperostotic segments fracture easily, and missed injuries can cause significant neurological damage. It may also cause dysphagia, airway obstruction, or myelopathy, occasionally becoming life-threatening.This case underscores the importance of primary care physicians recognizing the radiographic features of Forestier syndrome and considering it in the differential diagnosis when evaluating older adults presenting with spinal pain and stiffness.