I wear a stainless steel medic alert bracelet with my name and 'Autistic-AS' engraved. You may order them (different varieties available) through any pharmacy in the US (& many locations abroad). Note: They're REALLY hard to take off, so plan on this being permanent so it matches your wardrobe . You can even buy medic id's in real silver, yellow gold, etc. Medical personnel (or equivalent) will automatically check for medic alert asap - it does matter.
Of course, you may order online and customize your information. Again, just my name & Dx is fine for me, but others may wish to have their phone #, emergency contact, doctor, etc. There are different varieties/styles - your discretion.
Ask your pharmacist (or medical provider) or simply order online from: www.IdentifyYourself.com
Or just Google 'Medic Alert ID'
In US money, since it's high quality stainless (or whatever metal of choice), they start at ~ $25 plus shipping and handling. Still well worth the invesment should you need it! I've used it. Good luck!
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The ones who say “You can’t” and “You won’t” are probably the ones scared that you will. - Unknown