I sometimes get confused and disorientated during migraine attacks and have on occasions been found many miles from home. I always wear a MedicAlert bracelet and it has helped me many times. MedicAlert operates in Australia, Canada, Cyprus, Iceland, Malaysia, New Zealand, South Africa, United Kingdom, United States & Zimbabwe. The bracelet provides a brief description of my condition and a 24 hour hot-line phone number where my medical details, emergency contacts, allergies etc are kept. I pay a small annual fee for the service and I pay about the same amount as a donation. I'm guessing there are similar services available from other providers. If there is one on your country I would recommend making use of them if you have any sort of medical condition which the public/medics/police etc may need to know if you are incapacitated.

@likewater: I think I would be traumatized by an experience such you went through. I'm fortunate that I live in a country where police aren't normally armed (unless you can call pepper spray being armed) and where arrestees are not routinely handcuffed. There have been a few occasions where the police have picked me up because of my condition and they arrested me once, but that was before I got the bracelet. At those times I'm so "zombied out" that I don't feel emotion of any sort. And although I can't recall most of these incidents, none of what I can recall is in any way distressing. Perhaps I've just been lucky