Some classes of medications have a higher rate of<unk>  reactions than others. These include antiepileptics, antibiotics, antiretrovirals, NSAIDs, and general and local anesthetics. Risk factors Risk factors for<unk> es can be attributed to the<unk>  itself or the characteristics of the patient.<unk> -specific risk factors include the dose, route of administration, duration of treatment, repetitive exposure to the<unk> , and concurrent illnesses. Host risk factors include age, sex, atopy, specific genetic polymorphisms, and inherent predisposition to react to multiple unrelated<unk> s (multiple<unk>  syndrome). A<unk>  is more likely to develop with large doses and extended exposure. People with immunological diseases, such as HIV and cystic fibrosis, or infection with EBV, CMV, or HHV6, are more susceptible to<unk>  hypersensitivity reactions. These conditions lower the threshold for T-cell stimulation.
Drug allergy
Metal allergy
Food allergy
Nickel allergy
Wheat allergy
Animal allergy
Sesame allergy
Garlic allergy