Deer ticks can carry the bacteria that causes Lyme disease.
Lyme disease causes a rash, often in a bull's-eye pattern, and flu-like symptoms. Joint pain and weakness in the limbs also can occur.
Most people with Lyme disease recover completely with appropriate antibiotic treatment. For those who develop syndromes after their infection is treated, pain medications may provide symptomatic relief.
Consult a doctor for medical advice
Sources: Mayo Clinic and others.
More than 200,000 US cases per year
Treatable by a medical professional
Requires a medical diagnosis
Lab tests or imaging often required
Spreads by animals or insects