Which of Immunoglobulins is associated with allergic disorders?: (A) IgG, (B) IgM, (C) IgA, (D) IgE
Answer is D. IgE also has an essential role in type I hypersensitivity, which manifests various allergic diseases, such as allergic asthma, most types of sinusitis, allergic rhinitis, food allergies, and specific types of chronic uicaria and atopic dermatitis. Ref: Ananthanarayan & Parkers textbook of microbiology 9th edition pg:98