A patient is exposed a second time to an antigen and subsequently seeks medical attention with sudden shortness of breath, chest pain, fever, chills, malaise, and a cough that may be productive of purulent sputum. Which of the following is the most likely source for the antigen?

Question

Quizplus · Accepted Answer

Common organic antigens known to cause hypersensitivity pneumonitis include bacteria and fungi, which may be found in moldy hay (farmer's lung) or in the home environment, particularly in association with central humidification systems (humidifier lung), indoor hot tubs, and animal proteins (e.g., bird breeder's lung).

A Patient Is Exposed a Second Time to an Antigen