Hence, I have come up with few fictitious cases containing descriptions of signs and symptoms.
These are followed by relevant questions and their answers.
Other viruses and bacteria, especially Streptococcus pyogenes, can cause pharyngitis and cervical lymphadenopathy, but an enlarged spleen and a positive Monospot test make infectious mononucleosis the most likely diagnosis. A 5-year-old boy with diabetic ketoacidosis has ptosis of his right eyelid, periorbital swelling, and a black, necrotic skin lesion under his eye.
Biopsy of the skin lesion shows nonseptate hyphae with wide-angle branching.
In some of the cases, the true-false type of analysis is used.
There are some scattered illustrations of clinical phenomena and test results.
Some of the case study headings are "Weakness in a Young Boy," "Sudden Onset of Excrutiating Headache," "Sudden Loss of Speech," and "Depression and Confusion."The format is to first give a brief history and then to ask a series of multiple-choice questions about the problem.
The answers to the questions are then given, with some discussion of the reasons for the correct and incorrect answers, including the accepted diagnosis.
These brief clinical case vignettes are typical presentations of common infectious diseases.
Learning the most likely causative organisms of these classic cases will help you answer the USMLE questions and improve your diagnostic skills.