In a minority of cases, the natural history of migraine without aura (MO) is characterised over time by its evolution into a form of chronic migraine (CM). In order to detect the possible factors predicting this negative evolution of MO, we searched in our Headache Centre files for all clinical records that met the following criteria: (a) first visit between 1976 and 1998; (b) diagnosis ofMOor of commonmigraine at the first observation, with or without association with other primary headache types; (c)<15 days per month of migraine at the first observation; and (d) at least one follow-up visit at least 10 years after the first visit. The patients thus identified were then divided into two groups based on a favourable/steady evolution (GroupA: n = 243, 195women and 48men) or an unfavourable evolution (Group B: n = 72, 62 women and 10men) of theirmigraine over time. In the two groups, we compared various clinical parameters that were present at the first observation or emerged at the subsequent follow-up visits. The parameters that were statistically significantly more frequent in Group B-and can therefore be considered possible negative prognostic factors-were: (a) ≥10 days per month of migraine at the first observation; (b) presence of depression at the first visit inmales; and (c) onset of depression or arterial hypertension after the first observation but before transformation to CM in females. Based on these findings, in MO patients the high frequency of migraine attacks, comorbidity with depression, and the tendency to develop arterial hypertension should require particular attention and careful management to prevent evolution into CM. © Springer-Verlag 2012.
Detection of possible factors favouring the evolution of migraine without aura into chronic migraine / Manzoni, G.C; Lombardi, L.L.; Lana, S.; Maffezzoni, M.; Camarda, C.; Torelli, P.. - In: NEUROLOGICAL SCIENCES. - ISSN 1590-1874. - 33:SUPPL. 1(2012), pp. S165-S167. [10.1007/s10072-012-1075-0]
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