Lavigne has been vocal about her life-threatening battle with Lyme disease. The illness, which she says she contracted from a tick, causes extreme fatigue and joint pain, leaving the singer bedridden for months.

What does Lyme disease do to a person?

Typical symptoms include fever, headache, fatigue, and a characteristic skin rash called erythema migrans. If left untreated, infection can spread to joints, the heart, and the nervous system. Lyme disease is diagnosed based on symptoms, physical findings (e.g., rash), and the possibility of exposure to infected ticks.

Is Lyme disease fatal?

Lyme disease appears to rarely be fatal. Many of the fatal cases reported have been in patients co-infected with other tick-borne pathogens such as Ehrlichia species and B microti, and in Europe, tick-borne encephalitis.