<prompt> A 24 year old unmarried woman has multiple nodular, cystic, pustular and comadonic lesions on face, upper back and shoulders for 2 years. The drug of choice for her treatment.AcitretinIsotretinoinDoxycyclineAzithromycin  <response>: Ans. B. IsotretinoinAcitretin It is used to help relieve and control severe skin disorders, such as severe psoriasis. It works by allowing normal growth and development of the skin. Acitretin must not be used to treat women who are able to bear children unless other forms of treatment have been tried first and failed. Acitretin must not be taken during pregnancy because it causes birth defects in humansIsotretinoin It is used to treat the most severe form of acne nodular acne that cannot be cleared up by any other acne treatments, including antibiotics Birth defects deformed babies, loss of baby before birth miscarriage, death of baby, and early premature births. Female patients who are pregnant or who plan to become pregnant must not take isotretinoin.Female patients must not get pregnant: For 1 month before starting isotretinoin, While taking isotretinoin For 1 month after stopping isotretinoin 