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The time course of intracranial pressure (ICP) after subarachnoid hemorrhage (SAH) is not well known. This retrospective study was conducted to investigate the occurrence and the dynamic variation of raised ICP post-SAH. ICP was prospectively studied in 120 patients with SAH who were admitted to neurocritical care within 24 h of hemorrhage. Patients underwent continuous ICP monitoring for at least 7 days, unless they died. Clinical status on admission, radiographic tests, treatment details and neurological outcome on discharge were analyzed in relation to ICP. The highest daily mean ICP and the day when ICP reduced to normal levels were assessed. Of the 120 patients studied, 112 (93.3 %) encountered ICP elevation whilst in hospital. The daily mean ICP was higher in Hunt and Hess grades IV-V patients than grades I-III patients (P = 0.01). The elevated ICP remained at a higher level for the initial 3 days (grades I-III patients) or 4 days (grades IV-V patients), after which the pressure decreased towards normal levels. The in-patient mortality was significantly increased in the high ICP variability group (P = 0.001), which was divided by the cutoff point using receiver operating characteristic curve analysis. Raised ICP mainly occurs within 8 days post-SAH, especially the initial 3-4 days. Those highlight the need for earlier management of ICP after SAH.

Objective Tension-type headache is *These authors contributed equally to this work. usually manifested as head pain without associated symptoms, and the validation of diagnostic criteria presented are lacking and highly required in the International Classification of Headache Disorders. The aim of the present study was to explore the diagnosis criteria of tension-type headache in a multicenter-based sample from Chongqing, China. Methods Clinical characteristics and demographics were systematically and prospectively collected between March 2014 and December 2015 from 15 participating hospitals in Chongqing, using a semi-structured face-to-face interview. All patients were asked to complete a headache diary for at least 4 weeks. Results Out of 1832 patients with headache, 150 patients (97 female/53 male, 44.56 ± 11.9 years old) were diagnosed with tension-type headache based on the standard International Classification of Headache Disorders, 3rd edition beta version, and interestingly, 114 (76%) patients were diagnosed with tension-type headache based on the alternative criteria. One patient was excluded because only two of the four characteristics were fulfilled. Thirty-five (23.3%) patients did not meet the alternative criteria because of associated symptoms, including mild nausea (n = 6), photophobia (n = 1), and phonophobia (n = 28). All patients with TTH had mild or moderate headaches, 98.0% of patients suffered from non-pulsating headaches, 99.3% of patients said their headaches were not aggravated by routine physical activity, and 77.3% of patients had bilateral headache. Conclusions Non-pulsating headaches and headaches that are not aggravated by routine physical activity may represent core criteria for screening patients with tension-type headache. Nausea might not be an exclusion feature for diagnosis of TTH, but an important criterion for screening. Further studies are needed.

Given these results, early introduction of low-dose amitriptyline combined with abrupt withdrawal could be considered as a choice for patients with MOH.

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Objective: This study aims to investigate the factors affecting the efficacy of first oral prophylaxis in patients with chronic migraine (CM) and to assess patient compliance with their medication regimens.Method: To identify the therapeutic effect of prevention medication in 740 patients with newly diagnosed CM that did not receive any preventive treatments after 4 weeks in an open-label prospective study with retrospective baseline from January 2016 to January 2018, the factors that may affect the outcomes of preventive treatment were analyzed based on the demographic characteristics, migraine characteristics, family history of headache, and history of medication overuse. Moreover, the patients were followed up to evaluate their compliance with and the side effects of the medication at 4 weeks and at 12 weeks.Results: After 4 weeks of prophylaxis, 94.3% (n = 698) of the patients persisted with taking the medicine. The treatment was effective for 61.7% of CM patients (n = 431) and ineffective for 38.3% (n = 267). The results showed that the effectiveness of the preventive treatment was related to the number of headaches per month, and the effect was better for patients with headaches for 15-20 days/month than for those with headaches for 26-30 days/month (OR = 2.78, 95% CI: 1.26-5.75, P = 0.006). After 12 weeks of treatment, only 34.5% (n = 255) of the patients persisted with taking the medicine. The most common reason for non-compliance in CM patients is appointment difficulty in a headache clinic (31.8%).

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