These are 2 discussion initial posts, can you please comment on both of them separately and include at least 2 references in each post? apa format please with in-text citations. 
B. R.
Initial Discussion Post
In this case scenario, the 22-year-old male is having a type 1 hypersensitivity reaction or anaphylactic response to the allergy shot he received. This is a severe allergic reaction as evidenced by his difficulty breathing (sitting in tripod position), nausea, and weakness. This is an IgE mediated process. Antibodies (IgE) bind to mast cells and basophils which contain histamines. The mast cells suddenly release a large amount of histamine which causes inflammation. Severe cases may include bronchospasm, laryngeal edema, cyanosis, hypotension, and shock. Anaphylaxis is a medical emergency as it can lead to life threatening respiratory failure (Justiz-Vaillant