An adolescent is experiencing severe acne and has recently been diagnosed with prediabetes. Which medication does the nurse educate the adolescent about?

Correct Answer: B

Rationale: Metformin is used to manage prediabetes by improving insulin sensitivity and reducing glucose production. While clindamycin, tetracycline, and tretinoin are used for acne, the question ties the medication to the prediabetes diagnosis, making metformin the appropriate choice.

Correct Answer: C

Rationale: Tetracycline causes photosensitivity, requiring sun protection. Milk inhibits absorption, teeth discoloration affects children/pregnancy, and it interacts with birth control pills, needing nonhormonal methods.

Correct Answer: A

Rationale: Marjolin's ulcers refer to malignant changes occurring in chronic wounds, scars, or sinus tracts.

Correct Answer: B

Rationale: Keratoacanthoma is also known as molluscum sebaceum.

Correct Answer: D

Rationale: Placing the affected limb under cold running water helps reduce heat and soothe the burn.