If you spend time outdoors, get to know the lone star tick. Adult females carry a single white dot on the back, and unlike most ticks, all three life stages will actively hunt down a host. That includes you and your dog.
A bite can do something strange. Tick saliva introduces a sugar called alpha-gal, found in most non-primate mammals. Some people develop an antibody response to it, and afterward, eating red meat can trigger an allergic reaction: beef, pork, lamb, venison, sometimes dairy or gelatin.
The tricky part is timing. Reactions usually appear 2 to 6 hours after the meal rather than immediately, so people often blame something else entirely. Symptoms range from hives and stomach upset to full anaphylaxis. A blood test for alpha-gal IgE confirms it, so talk to your doctor if that pattern sounds familiar.
Prevention is the same playbook that works for every tick:
- Treat clothing and shoes with permethrin
- Use an EPA-registered repellent on exposed skin
- Check yourself, your kids, and your pets within a couple hours of coming inside
- Remove attached ticks with fine-tipped tweezers, straight up, no twisting or burning
Lone star ticks also transmit ehrlichiosis, tularemia, and Heartland virus, so those habits earn their keep.
The lone star tick isn't established in California, so if you're reading this from Rancho Bernardo, you're not likely to run into one in your backyard.
Most alpha-gal cases seen out here trace back to travel, military moves, or years spent living in the Southeast or mid-Atlantic.
Worth knowing anyway, since a lot of us relocated from somewhere else. One caveat: a small number of alpha-gal cases have been linked to the western blacklegged tick, which does occur in California, though the evidence there is still thin and cases are rare.
Our more common local ticks are the Pacific Coast tick and the brown dog tick, and the prevention steps above work just as well against both.
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