You need to see a doctor who is an Allergy / immunology specialist. I did and he performed a skin test and blood test that scientifically proved that I am allergic to garlic. Don’t expect any modern doctor to be too sympathetic to any patient, but to expect them to provide realistic treatment advice, which in the case of food allergies usually consists of avoidance, oral over the counter antihistamines (Benadryl and zyrtec), and possibly an epinephrine pen.