2. After inspection, you palpate the nodule. It feels indurated and the tissue around is also indurated. Upon measurement, the total involved area is about 2.2 cm. Mr. Smith also complains of significant discomfort and tenderness when you are palpating. You perform a complete lymph node examination and you do not feel any enlarged lymph nodes. At the end of the physical examination, he asks you, “Doc, what is wrong with my bug bite? Why is it not healing?” Based on the history and skin examination so far, select the Top 3 diagnoses on your differential.
