Hi Peter,
It's not that mold causes a Migraine, because Migraine is a genetic neurological disease, rather, it may trigger the headache symptom of a Migraine attack. These two article may be helpful explaining about Migraine disease: Anatomy of a Migraine.
Have you kept a Migraine diary to track your triggers? It is easy to do and we have a free version you can download here: Your Migraine and Headache Diary.
I hope this helps,
Nancy
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