Gout is the most common inflammatory arthritis among Filipinos, characterized by hyperuricemia leading to mono- sodium urate crystal deposition and an ensuing inflammatory response. Though typically a disorder of middle- aged and older adults, tophaceous gout presenting before the age of 30 is rare and suggests aggressive disease progression. Allopurinol, a first-line urate-lowering therapy, is generally effective but may cause rare, potentially life-threatening adverse reactions such as allopurinol hypersensitivity syndrome (AHS). Febuxostat, a non-purine xanthine oxidase inhibitor, is an alternative for patients intolerant to allopurinol. Although hypersensitivity reactions to febuxostat are extremely rare, isolated case reports document their occurrence in both patients with prior AHS and in allopurinol-naïve individuals. Hypersensitivity to both agents is exceedingly uncommon and presents a major therapeutic challenge. In such cases, febuxostat desensitization, conducted in collaboration with allergy specialists, may permit a viable solution to safely reintroduce urate-lowering therapy and prevent further disease progression. This case report describes a patient with young-onset, tophaceous gout who developed severe hypersensitivity reactions to both allopurinol and febuxostat — an unusual and challenging therapeutic dilemma. The case highlights the need for individualized management strategies, including the consideration of drug desensitization, in patients with limited urate-lowering options.

Human ; Male ; Adult: 25-44 Yrs Old ; World Health Organization ; Therapeutics ; Specialization ; Solutions ; Research Report ; Pharmaceutical Preparations

A 26-year-old female came in with progressive blurring of vision. She had developed memory loss and complained of headache, significant weight loss, and exertional left calf pain after prolonged walking. Pertinent physical findings included light perception on visual acuity examination, and the brachial and radial pulses of both arms were not appreciable. Thoracic and abdominal aortic imaging by computed tomography with contrast revealed narrowing along the thoracic aorta and its branches. Carotid Doppler showed bilaterally thickened walls in the common carotid arteries, with near total occlusion of the left carotid artery. These findings were consistent with bilateral ocular ischemic syndrome in Takayasu arteritis. She was given methylprednisolone 500 mg intravenously daily for 3 days with noted improvement in vision. She was discharged and showed improvement on prednisone 35 mg/day and aspirin 80 mg/day. On follow-up two weeks post-discharge, she reported being able to see silhouettes of persons and objects.