Two Things They Never Taught Us in Medical School
First thing they never taught us in medical school:
When they taught us to "go where it hurts last" (ie, examining the non-painful parts of the limb or abdomen before palpating the area of discomfort) they never taught us to EXPLAIN TO THE PATIENT that we were taught to go where it hurts last. I discovered this the hard way when patients thought I was an idiot, for example, for beginning the exam in the left upper quadrant of the belly when they had specifically indicated that the pain was in the right lower quadrant.
Second thing they never taught us in medical school:
When discussing certain specific causes of an overactive thyroid gland, they never told us to WARN THE PATIENT that a certain condition was named after a doctor; a doctor with a coincidentally unfortunate name. Imagine the reaction to being told you have a Grave disease, which is what too many patients hear when we refer to Dr. Graves and his hyperthyroidism. No other condition has probably produced more unnecessary panic than this eponym.