Association of migraine‐like headaches with Schimke immuno‐osseous dysplasia

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Abstract
Schimke immuno‐osseous dysplasia (SIOD) is characterized by spondyloepiphyseal dysplasia, nephropathy, and T‐cell deficiency. SIOD is caused by mutations in the putative chromatin remodeling protein SMARCAL1. We report an 8‐year‐old boy with SIOD and recurrent, severe, refractory migraine‐like headaches. Through a retrospective questionnaire‐based study, we found that refractory and severely disabling migraine‐like headaches occur in nearly half of SIOD patients. We have also found that the vasodilator minoxidil provided symptomatic relief for one patient. We hypothesize that these headaches may arise from an intrinsic vascular, neuroimmune, or neurovascular defect resulting from loss of SMARCAL1 function.