Acute calcific tendinitis (ACT) of the longus colli muscle is a rare and benign presentation of calcium phosphate crystal deposition disease. The calcifications are most frequently found in the superior portion of the longus colli muscle, which causes pain and a significant reduction in cervical motion due to inflammation of the anterior C1 and C2 prevertebral tissue. Literature suggests that ACT of the longus colli muscle presents following trauma or ischemic injury, resulting in the rupture of crystals prompting an inflammatory response.