You just finished a satisfying summer hike or wrapped up a weekend of yard work when you spot a tick clinging to your clothes ...

Erythema migrans is often the first sign of being infected with the bacteria Borrelia burgdorferi, which causes Lyme disease. Infected deer ticks can transmit the bacteria if they bite you and ...

Lyme disease is caused by Borrelia burgdorferi. Ticks are often fed on a variety of large mammals, particularly deer. Birds may also spread ticks over a wide area. The organism is transmitted to ...

Erythema migrans, a symptom of Lyme disease, can cause a bull's-eye or target-shaped rash. Erythema multiforme, a skin condition, can look similar. Learn more.

Up to 80% of people will develop a red rash (known as erythema migrans) in the days or weeks after contracting Lyme disease. It usually forms at the site of the tick bite, and the redness is ...

Not all rashes caused by Lyme disease look like the classic bull's-eye rash called erythema migrans. See pictures to know what to look for.

Lyme disease, also known as Lyme borreliosis, is an infection spread to humans through the bite of blacklegged ticks carrying a type of bacteria called Borrelia burgdorferi, or very rarely, B ...

Lyme disease is the most common tick-borne infectious disease in Europe (1). The responsible pathogen, Borrelia burgdorferi, was discovered 26 years ago. This organism was found to be the cause of ...

The hallmark sign of Lyme disease is the erythema migrans rash, which appears in about 70% to 80% of cases. It often begins as a small spot at the site of the tick bite and expands over days or ...

Lyme disease gained notoriety when cases spiked in 2022 and 2023, over doubling between 2017 and 2023, according to the CDC. Reported cases went from about 42,700 to about 89,500 annually. These ...

Borrelia burgdorferi bacteria are the main cause of Lyme disease. The most common symptom of Lyme disease is an erythema migrans (EM) rash, which can appear in the shape of a bullseye.

How people get Lyme disease Lyme disease comes from four main species of bacteria. In the US, it’s Borrelia burgdorferi; on occasion, Borrelia mayonii can also cause the disease, according to ...