*Appears to be a problem in less than 10% of patients. |
Immunological stimuli |
Venoms (IgE mediated bee venom) |
Complement derived anaphylatoxins |
Biological peptides (substance P, somatostatin) |
Polymers (dextran) |
Non-immunological stimuli |
Physical stimuli (extreme temperature, friction, sunlight) |
Drugs |
Acetylsalicylic acid and related non-steroidal analgesics* |
Thiamine |
Ketorolac tromethamine |
Alcohol |
Narcotics (codeine, morphine)* |
Radiographic dyes (iodine containing) |