A 63-year-old male, with a past medical history significant for Parkinson disease, presents to the dermatology clinic for evaluation of new onset skin irritation. Examination reveals oily, scaly, red patches (with adherent white flakes), worst between his eyebrows, behind his ears, and along his nasolabial folds. Which of the following diseases is the most likely explanation for these findings?

Which one of the following is true about the carrier state of hepatitis infection?

Most spontaneous bleeding into brain tissue occurs in patients with hypertension.

Which one of the following is the most common malignant tumor of skin?

Arrhythmias are mechanically inefficient because of which one of the following reasons?

Which one of the following causes the most deaths annually in the United States?

Which one of the following is the most common benign soft tissue tumor in adults?

Which one of the following is the best description of azotemia (nitrogen)?

At the time of diagnosis, most people with type 2 diabetes are which one of the following?

Within a period of days, more than 45 teenagers in a small rural town were diagnosed with hemorrhagic colitis. Unfortunately, another 50 patients contracted the disease, 2 of which developed hemolytic uremic syndrome, before epidemiologists were able to identify the source of infection, a contaminated batch of ground beef at the local hamburger joint. Which microbe was most likely the causative agent of this outbreak?