Nummular headache associated to arachnoid cysts

Nummular headache and pituitary lesion: A case report and literature review

“…Firstly, besides of the previously reported three patients and our patient associated with involvement of sellar and regional structures,[11–13] there are another three NH patients in whom intracranial secondaries are found diffusely at cerebellar tentorium,[8] high parietal cortical area,[9] and parietotemporal cortical area,[9] respectively. These intracranial secondaries are exclusively located at the ipsilateral juxtameninges and are also close to the painful area in them.…”

“…In contrast to a putative suggestion of peripheral neuralgia in NH, a few intracranial disorders, such as meningioma[8] or arachnoidal cyst,[9] have been found in patients presenting with a typical course of NH. The causal relation is further encouraged when pain subsides after a removal of meningioma in a patient.…”

A high prevalence of autoimmune indices and disorders in primary nummular headache

“…We think that there are three important reasons for underestimation, including a paucisymptomatology of autoimmune disorder at initial presentation, an incomplete survey of autoimmune indices in overall patients, and a shortage of detailed follow-up study after an initial diagnosis of NH. Nevertheless, the findings in our patients urge us to examine the primary theory of NH when autoimmune disorders are prevalent in our series and intracranial secondaries [6][7][8] have also been found in a few NH patients.…”

“…NH is proposed a form of peripheral neuralgia of the trigeminal nerve [3] which is supported by the consistency of pain pattern, focal atrophic change [4], and local sensory alteration [5] within the painful area. Although intracranial secondaries [6][7][8] and previous focal trauma [9] have been found in a few NH patients, the etiopathogenesis of NH is factually unknown. Since autoimmune disorders frequently involve the trigeminosensory nerve to produce a variety of craniofacial pain, they may therefore also provoke NH.…”

<i>Varicella-zoster</i> Virus Infection and Nummular Headache: A Possible Association with Epicranial Neuralgia

“…In the appendix of the second edition of the International Classification of Headache Disorders (ICHD-II), NH was categorized as a component of "cranial neuralgia and central causes of pain" (3). Despite reports of a few cases of intracranial secondaries (4)(5)(6), the etiopathogenesis of NH is factually unknown at present. We herein report the case of a woman who subsequently developed shingles in an area affected by NH.…”