The only time homeopathy would be the proper treatment is for a psychosomatic (somatoform) ailment - in such a case, it has a good chance of working since both the disease and the cure are imaginary.
I think Illivanilli's suggestion of keeping a migraine diary is very good one.
There were these two men, sharing a railway carriage. They didnt know each other. They just happened to be travelling together. One of the men had, resting in his lap, a cardboard box with holes punched in the top. After some time spent contemplating what might be inside his travelling companions box, the other man at last could not contain his curiosity. He said, Excuse me, but I couldnt help noticing your box. Does it contain some variety of animal? The other man, though obviously surprised by this impertinent intrusion from a stranger, smiled politely as he answered, Youre absolutely right. There is indeed a creature kept inside this box. And furthermore, I may reveal, the animal in question is a mongoose.
The first man, whod initiated the enquiry, was astonsihed by this revelation. Spluttering with surprise, he sought some further explanation of this certainly provocative disclosure made by his strange fellow-traveller. A mongoose? Sir I must confess I had expected it to be perhaps a cat, or rabbit, not a creature so exotic and outlandish. The animal you mention so excites my curiosity that I must beg you, sir, to tell me more. Where are you bound with such a specimen, if I may be so bold? The other man, who sat with the perforated box on his lap, shrugged wearily as he replied, Well, its something of a personal matter, as it concerns a family tragedy. However, since Im confident I may rely on your discretion, I suppose I dont mind sharing my unfortunate account with you.
You see, the man went on, this sorry tale concerns my elder brother. Hes always been what I suppose you might refer to as the black sheep of the family. He has for many years indulged himself in a predictable and commonplace array of vices, of which the worst is his fondness for strong spirits. His drinking has progressed until he is now in the final stages of delerium tremens. My brother now sees serpents everywhere, which is the reason I am taking him this mongoose, that he may be rid of them.
Excuse me, the other man interjected, looking puzzled, But, these snakes your brother sees
arent they imaginary snakes?
Indeed, his fellow traveller replied. But this, and here he gestured meaningfully to the perforated box set on his lap, is an imaginary mongoose.