Sleep disturbance management in patients with trigeminal autonomic cephalalgias

Trigeminal autonomic cephalalgias (TACs) are rare but are the most intense primary headaches that severely limit patients’ ability to work and be socially active. This article reviews the modern classification of TACs, based on the International Classification of Headache Disorders-3, and the key differences between TAC types, as well as the pathophysiological mechanisms – the role of the trigeminovascular system, autonomic nervous system, hypothalamus and vagus nerve – and their relation to circadian rhythms. The sleep disturbances that can occur in patients with TACs, exacerbating the course of the disease, and the role of melatonin, hypothalamus and suprachiasmatic nucleus in these conditions are also discussed. In addition, current therapies for cluster headache are described, which include acute therapy and prophylactic therapy, with recommendations regarding the timing of prophylactic therapy discontinuation. The review also includes the available data on melatonin as well as new therapies such as CGRP monoclonal antibodies and neuromodulation, which includes the two most promising techniques: non-invasive vagus nerve stimulation and sphenopalatine ganglion microstimulation. Furthermore, the authors present the clinical case of a patient with chronic cluster headache, which was significantly reduced in frequency and intensity when melatonin was added to the therapy.

Co-morbidity between trigeminal autonomic cephalalgias and complex regional pain syndrome: Two case reports

Background Trigeminal autonomic cephalalgias and complex regional pain syndrome are rare conditions, and their co-occurrence has not been reported previously. Clinical findings: In two patients, ipsilateral trigeminal autonomic cephalalgias developed after the onset of upper limb complex regional pain syndrome. Hyperalgesia to thermal and mechanical stimuli extended beyond the affected limb to encompass the ipsilateral forehead, and was accompanied by ipsilateral hyperacusis and photophobia. In addition, examination of the painful limb and bright light appeared to aggravate symptoms of trigeminal autonomic cephalalgias. Detailed examination of the association between facial and upper limb pain indicated that both sources of pain cycled together. Furthermore, in one case, stellate ganglion blockade inhibited pain for an extended period not only in the affected limb but also the face. Conclusions These findings suggest some overlap in the pathophysiology of complex regional pain syndrome and trigeminal autonomic cephalalgias. Specifically, central sensitization and/or disruption of inhibitory pain modulation on the affected side of the body in complex regional pain syndrome might trigger ipsilateral cranial symptoms and increase vulnerability to trigeminal autonomic cephalalgias.

Primary Headache Disorders: Trigeminal Autonomic Cephalalgias, Headaches With Specific Triggers, and Other Primary Headache Disorders

Primary headache disorders are those in which the predominant clinical feature is headache that is not caused by or attributed to another disorder. This chapter reviews the common primary headache disorders of migraine, tension-type headache, and chronic daily headache. The present chapter reviews less common primary headache disorders, such as trigeminal autonomic cephalalgias and headaches with certain triggers. A careful history, physical examination, and additional testing are often necessary to rule out a secondary cause.

A case of cranial autonomic dysfunctions predominant migraine: Migraine sans ache

Pain is the essential part of migraine headaches along with other features, whereas, cranial autonomic symptoms (CAS)/signs are a predominant and essential part of trigeminal autonomic cephalalgias. What if other features of migraine are present but the pain is absent? One such variation in migraine symptomatology is reported in this case, where the pain was not there but CAS/signs were predominant along with other features of migraine. The possible mechanism for such variation, in this case, maybe desensitization of afferent loop (comprised by nociceptors in extracranial and intracranial pain-sensitive structures supplied by the trigeminal nerve) and direct activation of the trigemino-cervical complex and brainstem structures causing dissociation of pain from the rest of the features of migraine. In this case, as the pain part gets completely dissociated from CAS/signs, hence this condition can be termed as “migraine sans ache.” The patient was started on anti-migraine treatment and she responded wonderfully

Aura in trigeminal autonomic cephalalgia is probably mediated by comorbid migraine with aura

Objective The presence of aura is rare in cluster headache, and even rarer in other trigeminal autonomic cephalalgias. We hypothesized that the presence of aura in patients with trigeminal autonomic cephalalgias is frequently an epiphenomenon and mediated by comorbid migraine with aura. Methods The study retrospectively reviewed 480 patients with trigeminal autonomic cephalalgia in a tertiary medical center for 10 years. Phenotypes and temporal correlation of aura with headache were analyzed. Trigeminal autonomic cephalalgia patients with aura were further followed up in a structured telephone interview. Results Seventeen patients with aura (3.5%) were identified from 480 patients with trigeminal autonomic cephalalgia, including nine with cluster headache, one with paroxysmal hemicrania, three with hemicrania continua, and four with probable trigeminal autonomic cephalalgia. Compared to trigeminal autonomic cephalalgia patients without aura, trigeminal autonomic cephalalgia patients with aura were more likely to have a concomitant diagnosis of migraine with aura (odds ratio [OR] = 109.0, 95% CI 30.9–383.0, p < 0.001); whereas the risk of migraine without aura remains similar between both groups (OR = 1.10, 95% CI = 0.14–8.59, p = 0.931). Aura was more frequently accompanied with migraine-like attacks, but not trigeminal autonomic cephalalgia attacks. Interpretation In most patients with trigeminal autonomic cephalalgia, the presence of aura is mediated by the comorbidity of migraine with aura. Aura directly related to trigeminal autonomic cephalalgia attack may exist but remains rare. Our results suggest that aura may not be involved in the pathophysiology of trigeminal autonomic cephalalgia.

Pediatric-onset trigeminal autonomic cephalalgias: A systematic review and meta-analysis

Background and objective There are five headache disorders composing the trigeminal autonomic cephalalgias (cluster headache, paroxysmal hemicrania, short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing (SUNCT), short-lasting unilateral neuralgiform headache attacks with cranial autonomic symptoms (SUNA), and hemicrania continua). Little is known about these disorders in the pediatric population. The objectives of this study are to report the full age ranges of pediatric trigeminal autonomic cephalalgias and to determine if pediatric-onset trigeminal autonomic cephalalgias display similar signs and symptoms as adult onset. Methods Search criteria in Medline Ovid, Embase, PsycINFO, and Cochrane Library were created by a librarian. The remainder of the steps were independently performed by two neurologists using PRISMA guidelines. Inclusion criteria for titles and abstracts were articles discussing cases of trigeminal autonomic cephalalgias with age of onset 18 or younger, as well as any epidemiological report on trigeminal autonomic cephalalgias (as age of onset data was often found in the results section but not in the title or abstract). Data extracted included age of onset, sex, and International Classification of Headache Disorders criteria for trigeminal autonomic cephalalgias (including pain location, duration, frequency, autonomic features, restlessness) and some migraine criteria (photophobia, phonophobia, and nausea). Studies that did not meet full criteria for trigeminal autonomic cephalalgias were examined separately as “atypical trigeminal autonomic cephalalgias”; secondary headaches were excluded from this category. Results In all, 1788 studies were searched, 86 met inclusion criteria, and most ( 56 ) examined cluster headache. In cluster headache, onset occurred at every pediatric age (range 1–18 years) with a full range of associated features. Autonomic and restlessness features were less common in pediatric patients, while migrainous features (nausea, photophobia, and phonophobia) were found at similar rates. The sex ratio of pediatric-onset cluster headache (1.8, 79 male and 43 female) may be lower than that of adult-onset cluster headache. Data for other trigeminal autonomic cephalalgias, while more limited, displayed most of the full range of official criteria. The data for atypical trigeminal autonomic cephalalgias were also limited, but the most common deviations from the official criteria were abnormal frequencies and locations of attacks. Conclusions Trigeminal autonomic cephalalgias can start early in life and have similar features to adult-onset trigeminal autonomic cephalalgias. Specifically, pediatric-onset cluster headache patients display the full range of each criterion for cluster headache (except maximum frequency of six instead of eight attacks per day). However, cranial autonomic features and restlessness occur at a lower rate in pediatrics. Additional information is needed for the other trigeminal autonomic cephalalgias. As for expanding the ICHD-3 criteria for pediatric-onset trigeminal autonomic cephalalgias, we have only preliminary data from atypical cases, which suggests that the frequency and location of attacks sometimes extend beyond the official criteria. Trial Registration: This study was registered as a systematic review in PROSPERO (registration number CRD42020165256).

A brief diagnostic screen for cluster headache: Creation and initial validation of the Erwin Test for Cluster Headache

Objective To use 1) newly generated data, 2) existing evidence, and 3) expert opinion to create and validate a new cluster headache screening tool. Methods In phase 1 of the study, we performed a prospective study of an English translation of an Italian screen on 95 participants (45 with cluster headache, 17 with other trigeminal autonomic cephalalgias, 30 with migraine, and 3 with trigeminal neuralgia). In phase 2, we performed a systematic review in PubMed of all studies until September 2019 with diagnostic screening tools for cluster headache. In phase 3, a 6-person panel of cluster headache patients, research coordinators, and headache specialists analyzed the data from the first two phases to generate a new diagnostic screening tool. Finally, in phase 4 this new screen was validated on participants at a single headache center (all diagnoses) and through research recruitment (trigeminal autonomic cephalalgias only, as recruitment was essential but was otherwise low). Results In total, this study included 319 unique participants including 109 cluster headache participants (95 total participants/45 cluster headache participants in phase 1, and 224 total participants/64 cluster headache participants in phase 4). It also found 123 articles on potential screening tools in our systematic review. In phase 1, analysis of the English translation of an Italian screen generated 7 questions with high sensitivity and specificity against migraine, trigeminal neuralgia, and other trigeminal autonomic cephalalgias, but had grammatical and other limitations as a general screening tool. In phase 2, the systematic review revealed nine studies that met inclusion criteria as diagnostic screening tools for cluster headache, including four where sensitivity and specificity were available for individual questions or small groups of questions. In phase 3, this data was reviewed by the expert panel to generate a brief (6-item), binary (yes/no), written screening test. In phase 4, a total of 224 participants completed the new 6-item screening test (81 migraine, 64 cluster headache, 21 other trigeminal autonomic cephalalgias, 35 secondary headaches, 7 neuralgias, 5 probable migraine, and 11 other headache disorders). Answers to the 6 items were combined in a decision tree algorithm and three items had a sensitivity of 84% (confidence interval or 95% confidence interval 73–92%), specificity of 89% (95% confidence interval 84–94%), positive predictive value of 76% (95% confidence interval 64-85%), and negative predictive value of 93% (95% confidence interval 88–97%) for the diagnosis of cluster headache. These three items focused on headache intensity, duration, and autonomic features. Conclusion The 3-item Erwin Test for Cluster Headache is a promising diagnostic screening tool for cluster headache.

The Promising Effect of Nerve Decompression in Trigeminal Autonomic Cephalalgias: Report of Case Series

Trigeminal Autonomic Cephalalgias (TAC) are excruciating headaches with limited treatment options. The chronic forms of TACs, including chronic cluster, chronic paroxysmal hemicrania, and hemicrania continua, are disabling conditions. In addition to drug therapy, there are some studies regarding nerve blocking and nerve stimulation with acceptable results. Here we report four cases of decompression nerve surgery with promising results on pain control in these difficult to treat headaches.