List the Hypersensitivities

Hey sdn, I learn a ton just by reading these forums so I just wanted to start a thread where we each list a hypersensitivity (please reference) and we'll learn as we go. I'll start Chronic gastritis/pernicious anemia - type 4 HS (pathoma pg 104, sec V.C.2.iii.) P.S. please try to list a HS that is unexpected. For example, dont list goodpastures, type 2 (we all know that one). Hope this helps everyone.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums