Pott's tumor is an infrequent entity that is more common in children it is characterized by having one or more subperiosteal abscesses associated with frontal bone osteomyelitis; and is often seen as a complication of frontal sinusitis. The diagnosis is clinical and once suspected, can be confirmed with imaging. Early treatment is essential to reduce morbidity and mortality. In this study, we present a 49-year-old male patient who was diagnosed and treated for diabetes mellitus and hypertension and who had a recurrent headache associated with a progressively bulging frontal bone that began 20 days after development of left retro-orbital pain and postnasal drip. He was treated with levofloxacin for 10 days and had slight symptom improvement. In a new assessment, a CT with contrast of the sinuses showed an exacerbation of chronic sinusitis bilaterally in the frontal, ethmoid, and maxillary sinuses. He was treated with endoscopic nasal surgery in order to avoid complications in the orbital region, intracranial region, or both.