When Dinner Becomes Dangerous—Alpha-Gal Syndrome as a Diagnostic Pitfall in the Emergency Department: An Illustrative Case Presentation

Alpha-gal syndrome is an underrecognized, tick-associated allergic reaction that can cause delayed anaphylaxis, posing a growing diagnostic challenge in the emergency department. Transmitted most commonly by the bite of the lone star tick, this serious allergic reaction to red meat and other mammal products was once rare and geographically limited. However, owing to climate change, shifting bird migration patterns, and the movement of deer, the lone star tick is now found along the entire East Coast and is spreading into the western United States. As this tick moves into new regions, more people are being exposed to alpha-gal syndrome-often without awareness of the condition. Because symptoms are delayed and can vary widely, the syndrome is frequently misdiagnosed or overlooked entirely. Insufficient awareness during ED assessment may delay recognition and escalate patient risk, emphasizing the need for strengthened nursing education and heightened diagnostic vigilance in underrecognized regions.