Health & Medical

He came up the steps three at a time and skipped the fourth, and that was the whole diagnosis. My dog did not limp in the dramatic way you picture. He just stopped using one back leg on the stairs he had flown up his whole life. I watched it for two days, then took him in, and the test came back positive for Lyme.

Lyme disease comes from the bite of an infected black-legged tick, and it does not announce itself the way people think. The classic sign in dogs is a shifting lameness, a limp that moves from leg to leg or appears and fades, because the bacteria inflame different joints on different days. By the time you see it, the infection has usually been aboard for weeks.

The tick that carries it is small, the size of a poppy seed in the nymph stage, and it likes the same tall grass and leaf litter our dogs love to crash through. One bite, a day or two attached, and the door opens. Not every bite transmits it, and not every infected dog gets sick, but the ones who do can get very sick if ignored.

What the workup and treatment looked like

The vet ran a snap test that checks for several tick-borne diseases at once, and Lyme lit up. Bloodwork followed to see if the kidneys were involved, because the rare serious form of canine Lyme attacks the filters and is far more dangerous than the joint version. His kidneys were clear, which let us treat with a course of antibiotics and an anti-inflammatory for the soreness.

He improved within days, the skip on the stairs gone, the old bounce back. The test, though, can stay positive long after the bacteria are gone, so "negative" is not the goal the way it is in people. The goal is a dog without symptoms and clean organs, and we got there.

Prevention is the real story. A monthly tick preventive, a tick check after every wooded walk, and a word with the vet about the Lyme vaccine if you live where the disease is common. I had been sloppy with the check, and the tick that bit him had fed long enough to do its work. The preventive I used killed ticks, but only after they attached, and that window was all it needed.

One thing worth saying plainly: do not wait for a bullseye rash. Dogs do not show that mark the way people do, and waiting for a sign you will never see wastes the early window. A new limp, a tired gait, a dog who quits the walk early, those are the signals that earn a test.

He is on a better preventive now and the checks are non-negotiable. The limp taught us both something, and neither of us plans to repeat the lesson.

The tick that bit him, when I finally found the spot, was gone, just a small red mark where it had fed and dropped off, having done its work. I had checked him, sloppily, and missed it in the thick fur of the hind leg. The preventive I used was the kind that kills on contact after attachment, and that window, a day or two, was all the bacterium needed. A lesson in the difference between protected and checked.

His energy returned so fast it almost scared me. The antibiotic course was short, the limp vanished in days, and within a week he was back to flying up those stairs like the skip had never happened. The test, as the vet warned, stayed positive, a ghost in his blood that means exposure, not active disease. I stopped worrying about the number and started watching the dog, which is the only signal that actually matters.

The farmer down the road lost a dog to the kidney form of Lyme, the rare one, and that story sits behind every tick check I do now. His dog went quiet, stopped eating, and was gone before the signs added up to a name. Mine got the easy version, caught early, treated, fine. Same disease, two endings, and the only variable was time. I tell his story to anyone who shrugs off the check, because the ticks do not care about our schedule, and the test is the one thing that argues with the silence.

The test stays positive, a quiet mark in his record that means he met the bacterium and won. The vet says that is fine, that we watch the dog and not the number, and we do. He runs the stairs, chases the ball, lives like the limp never happened, because for him it did not. The tick that bit him is long gone, and the only lasting thing it left was a habit in me, a check at the door, a hand in the fur, a thank-you said sideways to a dog who cannot hear it.

If your dog goes lame without an injury, think tick before sprain. The test is quick. The cost of missing it is not.