Skin: In the skin, anaphylactic shock can cause urticaria and angioedema. Histologically, this is characterized by the presence of dilated blood vessels, edema, and infiltration of immune cells within the dermis. Lungs: In the lungs, the increased vascular permeability can lead to pulmonary edema. The alveolar spaces may appear filled with a proteinaceous fluid, and there may be an infiltration of immune cells within the alveolar walls and interstitium. Gastrointestinal Tract: In the gastrointestinal tract, there can be increased permeability of the mucosal blood vessels, leading to edema and immune cell infiltration within the mucosa and submucosa. Heart: The heart may show signs of increased vascular permeability and infiltration of immune cells within the myocardium. This can be particularly dangerous as it can impair cardiac function.
