The best choice of antibiotic in treating localized impetiginous lesions in patients with atopic dermatitis is

Correct Answer: C

Rationale: Topical mupirocin is effective against Staphylococcus aureus a common pathogen in impetigo.

Correct Answer: A

Rationale: Hypomanic episodes are associated with bipolar disorder, not major depressive episodes. Depressed mood, loss of interest, and significant weight loss are core criteria for major depression.

Correct Answer: B

Rationale: In metabolic acidosis, hydrogen ions shift into cells, causing potassium to move out, leading to hyperkalemia despite normal total body potassium.

Correct Answer: D

Rationale: Diphasic stridor (occurring during both inspiration and expiration) suggests a more severe upper airway obstruction, commonly seen in severe laryngitis or subglottic stenosis.

Correct Answer: B

Rationale: Yellow jackets are highly aggressive and responsible for the majority of insect sting-related allergic reactions due to their frequent and painful stings.