What abbreviation is commonly used for a headache in medical notes?

The abbreviation commonly used for a headache in medical notes is "HA." This abbreviation is widely recognized in the medical field, allowing healthcare providers to communicate efficiently about patient symptoms. The use of abbreviations helps streamline documentation and improves the clarity of medical records, particularly in fast-paced clinical settings.

In contrast, the other options represent different medical terms or concepts. "HPI" stands for History of Present Illness, which provides context regarding the patient's current health issue. "GSW" refers to Gunshot Wound, indicating a trauma-related injury. "FHx" means Family History, which includes information about health conditions that may run in the family. Understanding these distinctions is critical for effective medical communication and accurate documentation.