What does the abbreviation STD stand for?

• A. Attention deficit hyperactivity disorder
• B. Sexually transmitted disease
• C. Ultrasound
• D. Peripheral nervous system

Answer: (B)

Understanding medical abbreviations helps you quickly identify what a term refers to in patient care. STD stands for Sexually Transmitted Disease, meaning illnesses that are spread through sexual contact. This includes infections like chlamydia, gonorrhea, syphilis, and HIV, which may or may not show symptoms but are transmitted through intimate contact. The other options describe things that are not related to the abbreviation: ADHD is a neurodevelopmental disorder, ultrasound is an imaging method, and the peripheral nervous system is a part of the nervous system. In context, STD specifically refers to sexually transmitted diseases.