TY - BOOK
T1 - Epidemiological examinations of migraine, treatment, and risk modulating disorders
AU - Davidsson, Ólafur Birgir
N1 - Defended 15. february 2024
PY - 2024/2/15
Y1 - 2024/2/15
N2 - Approximately one in five individuals will experience migraines at some point in their life. Yet, many aspects of this disorder remain unknown. This thesis comprises four studies on underexplored areas: (I) the use of modern migraine treatments; (II) predicting the efficacy of modern migraine treatments; (III) the occurrence of migraine among individuals diagnosed with cancer in childhood, and (IV) the relationship between migraine and preeclampsia. Various methodological approaches were employed, such as traditional epidemiology, machine learning, and genetic risk profiling. The objective of Study I was to provide an overview of modern acute migraine treatments in Denmark from 1994 to 2019. Analysis of data from the nationwide Danish prescription registry indicated that triptans are prescribed more restrictively, and that treatment is discontinued more often than general clinical guidelines would recommend. Study II aimed to identify which patients could be pre-emptively recognized as less likely to benefit from this treatment. Analyses utilizing a comprehensive questionnaire survey, nationwide registers, and a genetic data, and machine learning showed, for example, that patients with migraine with aura benefit less form triptan based treatment, and those with menstruation-triggered migraines benefit more. Migraine can often occur alongside or as a sequela to other diseases. While headache is one of the most common late effects of childhood cancer, it remains unclear whether this includes migraines. The aim of Study III was to compare the incidence of migraine among individuals who were diagnosed with cancer in childhood with the general population. The study indicated that childhood cancer was associated with a modest, yet statistically significant increased risk of migraine, particularly among those who had cancer in late adolescence. The purpose of Study IV was to interrogate a putative relationship between migraine and preeclampsia. This study included data from the National Patient Register and Prescription Register, along with self-reported migraine information and genetic data from the Danish Blood Donor Study. Statistical analyses showed that having migraines prior to pregnancy was linked to an increased risk of preeclampsia, and conversely, that preeclampsia was linked to an increased risk of subsequent migraines. There was, however, no evidence of an overlapping genetic predisposition for both conditions. Although the underlying mechanism is unknown, this observation may be clinically relevant. The four studies in this thesis demonstrate that by combining the use of traditional and modern epidemiological methods, new insights can be gained into the natural history of migraine, contributing to the improvement and refinement of current treatment strategies.
AB - Approximately one in five individuals will experience migraines at some point in their life. Yet, many aspects of this disorder remain unknown. This thesis comprises four studies on underexplored areas: (I) the use of modern migraine treatments; (II) predicting the efficacy of modern migraine treatments; (III) the occurrence of migraine among individuals diagnosed with cancer in childhood, and (IV) the relationship between migraine and preeclampsia. Various methodological approaches were employed, such as traditional epidemiology, machine learning, and genetic risk profiling. The objective of Study I was to provide an overview of modern acute migraine treatments in Denmark from 1994 to 2019. Analysis of data from the nationwide Danish prescription registry indicated that triptans are prescribed more restrictively, and that treatment is discontinued more often than general clinical guidelines would recommend. Study II aimed to identify which patients could be pre-emptively recognized as less likely to benefit from this treatment. Analyses utilizing a comprehensive questionnaire survey, nationwide registers, and a genetic data, and machine learning showed, for example, that patients with migraine with aura benefit less form triptan based treatment, and those with menstruation-triggered migraines benefit more. Migraine can often occur alongside or as a sequela to other diseases. While headache is one of the most common late effects of childhood cancer, it remains unclear whether this includes migraines. The aim of Study III was to compare the incidence of migraine among individuals who were diagnosed with cancer in childhood with the general population. The study indicated that childhood cancer was associated with a modest, yet statistically significant increased risk of migraine, particularly among those who had cancer in late adolescence. The purpose of Study IV was to interrogate a putative relationship between migraine and preeclampsia. This study included data from the National Patient Register and Prescription Register, along with self-reported migraine information and genetic data from the Danish Blood Donor Study. Statistical analyses showed that having migraines prior to pregnancy was linked to an increased risk of preeclampsia, and conversely, that preeclampsia was linked to an increased risk of subsequent migraines. There was, however, no evidence of an overlapping genetic predisposition for both conditions. Although the underlying mechanism is unknown, this observation may be clinically relevant. The four studies in this thesis demonstrate that by combining the use of traditional and modern epidemiological methods, new insights can be gained into the natural history of migraine, contributing to the improvement and refinement of current treatment strategies.
M3 - Ph.D. thesis
BT - Epidemiological examinations of migraine, treatment, and risk modulating disorders
ER -