Which information would the nurse share with an adolescent female suffering from severe cystic acne who is placed on isotretinoin?

A. Inform the client about the risk of teratogenicity is correct. Isotretinoin is a highly teratogenic medication, meaning it can cause severe birth defects if taken during pregnancy. Female adolescents of childbearing potential must receive extensive education on pregnancy prevention, use two forms of contraception, and undergo regular pregnancy testing before and during treatment. This is the most critical safety information the nurse must share. B. Inform the client to apply medication prior to bed is incorrect because isotretinoin is taken orally, not applied topically. While some acne medications are topical and may be applied at night, isotretinoin is systemic and requires monitoring of lab values and adherence to dosage instructions. C. Inform the client to take a multivitamin daily is incorrect. In fact, patients on isotretinoin should avoid excessive vitamin A supplementation, as isotretinoin is a vitamin A derivative and excess can increase toxicity risk. D. Inform the client to scrub vigorously prior to application is incorrect because isotretinoin is not applied topically, and vigorous scrubbing of the skin can worsen acne and cause irritation. Gentle cleansing is always recommended for acne-prone skin.