Final answer:
The abbreviation for 'Loss of consciousness' is LOC, a critical symptom in emergency medicine and neurology, especially related to stroke identification via the FAST mnemonic.
Step-by-step explanation:
The correct abbreviation or symbol for the definition 'Loss of consciousness' is often denoted as LOC in medical contexts. This notion is fundamental in neurology and emergency medicine, as a loss of consciousness can be a significant symptom requiring immediate attention. For example, it is an urgent symptom in conditions such as stroke, which is highlighted by the FAST mnemonic. FAST helps identify the signs of stroke, with 'T' standing for 'Time to call 911' immediately if symptoms such as facial drooping (F), arm weakness (A), or slurred speech (S) are present, indicating possible loss of neurological functions. Quick response in these scenarios is critical as it can significantly impact the recovery process and prevent long-term neurological problems following events like stroke or transient ischemic attack (TIA).