A Patient Presents in the Emergency Room with Large Red

question 63

Essay

A patient presents in the emergency room with large red lesions up and down his arms. His case history reveals that he works for a gardening company, and that this rash most likely developed after clearing a weedy bank two days prior. The resident on duty concludes that the rash is a result of poison ivy exposure. Immunologically speaking, what is going on in this man's body, and what type of immune response is he experiencing?

---

Definitions:

Contribution Margin

The amount of revenue remaining after deducting variable costs, which can be used to cover fixed costs and contribute to profit.

Operating Costs

Expenses associated with the operation of a business, including costs of goods sold and administrative expenses.

Annual Cash Inflows

The total amount of money, often from sales, investments, or financing, that flows into a company over a year.

Discount Rate

The interest rate used to discount future cash flows of a financial instrument, in order to determine its present value.