Answer to Question 1
B
For moderate to severe acne, oral antibiotics are indicated. Doxycycline is a drug of first choice. Hormonal agents, such as oral contraceptive pills (OCPs), are used in female patients who are at least 15 years old. Isotretinoin is used when other treatments fail and acne is severe. Spironolac-tone is used when OCPs fail.
Answer to Question 2
A
Only one organic sunscreen, avobenzone, absorbs the full range of UV radiation. The other agents do not protect against the full range of UV radiation. Titanium dioxide and zinc oxide are inorganic screens.