Lyme disease is a bacterial illness caused by a bacterium called a "spirochete."  The bacterium is known as Borrelia burgdorferi in the US while in Europe the bacteria is known as Borrelia Afzelii. There are ticks that are found on deer that harbor the bacterium in their stomach. Lyme disease is spread by these ticks – as they bite the skin the bacterium infects the body.  Lyme disease is not a contagious disease aka if a person has it, that person can’t transmit it to another person. Some of the symptoms include abnormalities in the joints, skin, heart and nervous system.

Multiple Sclerosis is a progressive disease that affects the myelin coating of the nerve cells, which leads to fatigue, muscle weakness, bowel problems, depression, and difficulty in thinking, balance problems, and more. It is an autoimmune disease, and there is no known cause and no known cure for the moment.

It is not uncommon for MS and Lyme to be misdiagnosed, because they share a few similar symptoms. However, if a person has MS this clearly shows on an MRI, while Lyme disease diagnosis relies more on differential diagnosis.