“…1,16 The incidence with LONIC (eg, iohexol, iopamidol, ioversol, iopromide, ioxilan), which is commonly used by interventional pain physicians, is 0.2% to 3% for mild to moderate immediate hypersensitivity reactions and 0.004% to 0.04% for life-threatening immediate hypersensitivity reactions. [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] Previously cited risk factors for these reactions include: women, Caucasian, elderly, and coexisting debilitating medical conditions. 36 Other predisposing factors include: asthma, cardiovascular disease, anxiety, beta-blockers, nonsteroidal anti-inflammatory drugs (NSAIDs), hematological conditions such as sickle cell and myeloma, and renal disease.…”