Which abbreviation is used to refer to a family history in a medical context?

The abbreviation FHx is used to denote "Family History" in a medical context. This term is crucial in healthcare because a patient's family history can provide significant insights into genetic predispositions to various conditions and help healthcare providers assess risk factors for diseases. Understanding a patient's family health background can aid in diagnosis, preventive care, and treatment options.

In contrast, HA might refer to headaches or health assessments in different contexts, GSW typically stands for gunshot wound, which relates to injuries rather than family history, and GU is often used to refer to genitourinary systems or conditions. Therefore, FHx stands out as the correct choice specifically related to family history.