[A prolonged case of intractable sneezing. Pathophysiological hypothesis].

A 13-year-old boy sneezed paroxysmally and continuously, day and night, for 18 days. Sneezing limited his daily activities and motivated hospital admission. Pediatric clinical examination and all other immunologic, otorhinolaryngologic, pneumologic, neurologic, radiologic, and psychiatric studies were normal. There was no response to treatment with antihistamines, corticoids, or anti-convulsants, which obscured the diagnosis. Definitively effective treatment and its implications in the pathophysiology of sneezing are discussed.