Rheumatoid arthritis is associated with an atypical immune response called a type 3 hypersensitivity reaction. This reaction happens due to immune complexes in the body. It can be treated by ...

A nerve pathway responsible for a type of hypersensitivity that makes many people feel extreme pain in response to even light touch in the wake of inflammation, trauma or nerve injury has been ...

Sensory differences aren’t always visible — but they can dramatically affect how patients react during emergencies. Learn how ...

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 ...

Farmer’s lung is a type of allergic reaction that occurs as a response to mold from crops and grains. For this reason, it commonly affects those who work on farms. There are different categories of ...