Hyperuricemia is known to be a necessary and causal condition for gout, but much more prevalent than gout. Medicine has standardized treatments for gout, but has no such determination for asymptomatic hyperuricemia. Nevertheless, people with hyperuricemia, gouty or not, too often continue to be at risk for shortened lifespans from life-threatening comorbidities, all of which are known to be consequences of obstructive sleep apnea (OSA), which is shown herein to cause most hyperuricemia. This review also presents the wide variety of OSA consequences, many of which are irreversible and life-threatening, as the rationale for treating all hyperuricemia (gouty and asymptomatic) by diagnostic testing and effective treatment for OSA as soon as hyperuricemia is detected. It advocates frequent ultrasonic screening for aggregated urate crystals. Multiple epidemiological studies have found OSA to be significantly more prevalent in those people with gout diagnosed with OSA than it is in those never diagnosed with it. A clinical study shows an even higher prevalence of OSA in people with gout. The pathophysiology of hypoxia from OSA explains how it would lead to both the overproduction and the underexcretion of uric acid, leading to hyperuricemia and the precipitation of monosodium urate crystals which cause a gout flare. Resolving OSA has been shown to prevent or even reverse life-threatening diseases that are recognized comorbidities of hyperuricemia and gout, and can prevent further gout flares. In order to extend the length and quality of life of people with gout or hyperuricemia, when either first manifests a patient sleep study is recommended, followed by effective OSA treatment as warranted.

Diffuse idiopathic skeletal hyperostosis (DISH) can lead to dysphagia, airway obstruction, and unstable vertebral fractures. Surgery can be performed to relieve cervical compression or stabilize fractures of the spinal column, with or without decompression of spinal cord injuries. In this review, the peri-operative surgical techniques in cases with DISH are discussed, as well as the pre-operative and post-operative pearls and pitfalls. It is essential for spine surgeons, including orthopedic surgeons and neurosurgeons, to be aware of the considerations, anticipations, and approaches for the management of dysphagia, airway obstruction, and fractures in DISH patients in order to improve patient outcomes for this specific at-risk patient population.

Systemic vasculitis is a heterogeneous group of disorders characterized by inflammation and necrosis in the vessel wall. Patients usually present a quite broad spectrum of manifestations which vary in terms of vessels’ size affected, organs involvement, and the extent of inflammatory process as well as an immunological diversity, including autoantibodies profile. Though, the diagnosis is based on clinical features, tissue biopsy, imaging investigations, and serologic tests. The main autoantibodies, important not only in the diagnosis but also in monitoring and prognosis of systemic vasculitides, are anti-neutrophil cytoplasmic antibodies (ANCA), anti-glomerular basement membrane antibodies (anti-GBM), anti-complement component C1q antibodies (anti-C1q), and cryoglobulins. Although other autoantibodies have been analyzed, their clinical utility still needs further investigation. The current work aimed to review the clinical associations of main autoantibodies in systemic vasculitis.