Ticks are external parasites, living by feeding on the blood of mammals, birds, and sometimes reptiles and amphibians. The timing of the origin of ticks is uncertain, though the oldest known …

There are two families of ticks found in the United States: Ixodidae (hard ticks) and Argasidae (soft ticks). Of the 700 species of hard ticks and 200 species of soft ticks found throughout the …

Learn where ticks live, how to prevent tick bites, and what to do after a tick bite. Homepage for CDC's website about ticks and tickborne diseases.

Nov 14, 2023 · Most tick bites are painless or cause only minor symptoms, such as a change in skin color. But the bite from some ticks can be serious. In the United States, the number of …

The following is a list of all of the major tick-borne diseases, the usual tick vector (s) or common ticks, and the pathogen (s) of the tick species that, if known, transmits them in the United States.

Jul 24, 2025 · In this article, we help you identify ticks and tick bites, along with the symptoms of tick-borne illnesses, and learn what to do if a tick bites you.

Jun 23, 2025 · The risks of getting a tick-borne disease like Lyme or relapsing fever vary by region, depending on what ticks are around, what they're carrying, and how likely they are to …

Apr 21, 2025 · Learning what a tick bite looks like is essential because you can’t rely on seeing the tick. The tick may fall off quickly or be so small it’s undetectable. Additionally, tick bites …

May 15, 2024 · If you get a tick bite and develop the symptoms below within a few weeks, see your healthcare provider. The most common symptoms of tick-related illnesses include: …

Tick identification is the first step to tick-borne disease prevention. Learn tips for identifying ticks and tick bites.