A 29-year-old man comes to the clinic complaining of generalized fatigue. The patient is new to the clinic and reports that, over the past few weeks, he has been feeling much more tired than usual. He also reports that this happens to him just about every year, and that other physicians have told him that he is "overworked." His review of symptoms is notable for frequent sneezing, post-nasal drip, eye watering, and a itch of his posterior pharynx. These symptoms tend to be worse in the spring and summer and have been bothering him since mid-April, about 1 month ago. His past medical history is remarkable only for mild asthma induced by being outdoors. He takes no regular medications but does take diphenhydramine on occasion. He denies tobacco, ethanol, or illicit substance use. Which of the following is the most appropriate diagnostic test at this time?
A. Blood radioallergosorbent test
B. None, the diagnosis is based solely on the history and physical examination
C. Intradermal testing
D. Serum protein electrophoresis
E. Skin-prick testing
A. Blood radioallergosorbent test
B. None, the diagnosis is based solely on the history and physical examination
C. Intradermal testing
D. Serum protein electrophoresis
E. Skin-prick testing