Final answer:
A 24-year-old sexually active female with a truncal rash and positive non-treponemal test should receive treatment for syphilis, such as parenteral penicillin G. Other options include tetracycline and doxycycline.
Step-by-step explanation:
If a 24-year-old sexually active female presents with a truncal rash and a positive non-treponemal test, it is indicative of a possible syphilis infection. While awaiting the results of her treponemal test, she should receive treatment for syphilis.
The recommended treatment for syphilis is parenteral penicillin G. The exact choice of penicillin depends on the stage of the disease. Other options include tetracycline and doxycycline.
It is important for the patient to complete the full course of treatment, as directed by her healthcare provider, even if her symptoms improve.