In the United States, several types of ticks can be found today. Not all of them can spread illnesses, but you have to be careful with any ticks as a general rule of thumb. One of the most dangerous and harmful ticks in the United States is the black-legged tick . These black-legged ticks can be harmful and dangerous for most people because they have been spreading a lot of tick-borne illnesses to many people in recent years. In this article, we are going to discuss some popular illnesses that can be caused by ticks. Some of these illnesses can cause serious symptoms in some people. Common Tick-Borne Illnesses Lyme Disease This is one of the most common diseases from ticks. Lyme Disease is commonly caused by Borrelia burgdorferi . This disease can cause a serious bacterial infection that may affect humans and animals. It is commonly transmitted by the black-legged ticks or Ixodes scapularis . This infection may cause some symptoms on your skin, for example, rash, aches, and fever. Thi...