Resources
Tick bite / Lyme disease
What Is It?
Lyme disease is a zoonotic disease transmitted by ticks and caused by the bacterium Borrelia burgdorferi (B. burgdorferi)
Common Symptoms of Lyme Disease
Early signs and symptoms of Lyme disease may include:
• skin rash (erythema migrans*)
• fever
• chills
• fatigue
• headaches
• swollen lymph nodes
• muscle and joint pain
*Erythema migrans is a rash that usually begins at the site of the tick bite. This rash slowly spreads over several days to reach more than 5 cm in diameter.
Late symptoms of Lyme disease may appear days or months after being bitten by an infected tick. Symptoms may include:
• more rashes
• dizziness
• severe headaches
• migratory pain
• arthritis
• symptoms affecting memory and thinking
Causes
Lyme disease is spread by the bite of an infected black-legged tick.
In most cases, infected ticks must remain attached for at least 24 hours to transmit the bacteria that causes Lyme disease.
You may not notice a tick bite, as ticks are tiny and their bites usually do not cause pain.
Possible Tests
Diagnosing Lyme disease remains a significant challenge, as no serological test to date offers absolute reliability.
Treatment
If you are diagnosed with early-stage Lyme disease, you will need to take an antibiotic.
Prevention
• After spending time outdoors, check yourself for tick bites.
• Apply insect repellent containing DEET or picaridin to your skin and clothing.
• Wear light-colored pants and a long-sleeved shirt so you can spot ticks more easily.
• Tuck your shirt into your pants and pull your socks over the legs of your pants.
• Take a shower as soon as possible after spending time outdoors.
• Put your clothes in the dryer on high heat for ten minutes. If the clothes are wet, they may need to stay in the dryer longer.
• Check your outdoor gear and pets for ticks.
• Treat pets that are frequently exposed to ticks with oral or topical tick control products (as recommended by your veterinarian).
When to Seek Immediate Medical Attention
Seek immediate medical attention within 72 hours of removing the tick if:
• The tick remained attached to the skin for 24 hours or more.
• The time between tick removal and the onset of PPE does not exceed 72 hours
If you experience any of the following symptoms after a tick bite:
• skin rash;
• headache;
• fever;
• muscle and joint pain;
• spasms;
• weakness, numbness, or tingling;
• general feeling of malaise.