—An analysis of registry data concluded that hypersensitivity reactions in patients with mastocytosis are caused by exposure to certain triggers, including low tryptase levels and stings from certain ...

Both allopurinol and febuxostat carry similar, significant increased risks for hypersensitivity reactions compared with colchicine, according to data published in Annals of the Rheumatic Diseases.

Hypersensitivity to the cold, especially ice cold feet, as well as a feeling of heaviness in the legs, are linked to the presence of varicose veins, finds a large study published in the open access ...

Corticosteroid hypersensitivity reactions are an uncommon yet clinically significant phenomenon that can pose challenges in the management of patients requiring steroid therapy. These reactions may be ...

Hypersensitivity reactions to vaccines occur in 1 in 50,000 to 1 in 100,000 doses. Most are local reactions and allow for the completion of the vaccination series. Systemic reactions are a minority ...