

Last night a patient came into the Urgent Care with a tick on his belly. He recently returned from a trip to New York State and he was concerned about the possibility of developing Lyme disease. When I looked at the tick, I noticed that it was small and almost translucent. It was attached to his skin but its head was still clearly visible and had not burrowed below the surface of the skin on his abdomen.
Tick bites are common this time of year. They occur on humans as well as animals such as dogs. Many different types of ticks in the United States, only some of which are capable of transmitting infections. The risk of developing an infection such as Lyme disease after being bitten depends upon the geographic location, season of the year, type of tick and how long the tick was attached to the skin.
The risk of acquiring an infection from a tick is actually quite low. In the case of my patient, the tick hadn’t even taken a blood meal – ie. it was not engorged with blood. His risk of developing Lyme disease from that tick was absolutely 0%. Ticks transmit infection only after they have attached and become engorged with blood. Deer ticks that transmit Lyme disease must feed for more than 36 hours before transmission of the organism called Borrelia burgdorferi.
If you come in to see me after you’re bitten by a deer tick (the type that carries Lyme disease), I would generally advise one of two approaches:
1) Observe the area and treat with antibiotics only if signs of infection develop
2) Treat with antibiotics immediately as a preventative measure
The individual patient’s history, the type of tick and how long it was attached and the patient’s wishes will help determine which approach to take.
How to Remove a Tick: Some patients come in to see me after they’ve already tried removing a tick and have been unsuccessful or partially successful. I commonly see patients who come in after they’ve removed only part of the tick and the head and are concerned because the tick head is still buried below the skin. Here is the technique that I use to remove a tick:
1) Do not attempt to use a match, cigarette, nail polish, Vaseline, liquid soap or kerosene because it may just irritate the tick and cause it to inject the harmful organism into the wound
2) Use fine tipped tweezers to grasp the tick as close to the skin as possible
3) Pull back gently but firmly using even, steady pressure without jerking or twisting the tick
4) After removing the tick, wash the skin and hands with warm soapy water
5) If any part of the tick is still in the skin, they generally come out on their own. I don’t recommend attempting to remove little pieces of the tick at home as this can cause skin trauma and scarring.
6) Go see your medical provider if you are concerned about not being able to remove the tick.
Treatment: The Infectious Diseases Society of America recommends treatment with antibiotics preventatively only in people who meet ALL the criteria below:
1) The attached tick was identified as an adult or nymph deer tick
2) The tick was attached for more than 36 hours based on how engorged the tick appears and the amount of time since outdoor exposure
3) Antibiotic treatment can begin within 72 hours of tick removal
4) The area where the tick bite occurred was in an area where the organism B. burgdorferi infection rate is greater than 20% – generally in parts of New England, parts of the mid-Atlantic states and parts of Minnesota and Wisconsin.
5) The patient can take doxycycline – i.e. the patient is not pregnant or breastfeeding a young child or allergic to this antibiotic.
If all the criteria above are met, the treatment is a single dose of doxycycline 200mg for adults and 4mg/kg up to a maximum of 200mg for children older than 8 years of age.
Symptoms of Lyme disease: What the area where the tick bite occurred and observe for expanding redness. The rash that is associated with Lyme disease is called erythema migrams (EM). This rash is a salmon color usually and typically expands over a few days or weeks and can reach up to 8 inches in diameter. The center of the rash tends to become skin colored (clear) as the rash grows in size. This gives the rash a sort of “bull’s eye” appearance. The rash generally doesn’t cause any symptoms.
Other associated symptoms of Lyme disease could include:
1)
A few days to a month after the bite: fatigue, malaise, lethargy, mild headache, mild neck stiffness, aches, joint pain and enlarged lymph nodes.
2)
Weeks to months after the bite: Inflammation of the heart, heart rhythm problems, meningitis, encephalitis, severe joint pain, multiple areas of rash, eye pain/vision problems, liver disease, kidney disease.
I hope that you have found this information useful. Wishing you the best of health,
Ticks aside, most of what goes up on this blog now is obesity medicine and GLP-1 therapy, including whether Ozempic and Zepbound cause muscle loss.
Updated for 2026: The Preventive Dose Has Rules Now
When I wrote this in 2012, the single preventive dose of doxycycline after a tick bite existed but was applied loosely. The 2020 joint guideline from the infectious disease, neurology, and rheumatology societies tightened it into something specific, and the specifics are what decide whether you should get it (1).
All three of these have to be true. The tick was an Ixodes species. The bite happened somewhere Lyme is genuinely common. And it had been attached at least thirty six hours. If all three hold, a single dose of doxycycline, 200 milligrams for an adult or 4.4 milligrams per kilogram up to 200 for a child, given within seventy two hours of pulling the tick off.
If you cannot confidently say all three, the guideline says to watch and wait rather than treat. That is a real recommendation, not a hedge. Most tick bites do not need antibiotics.
The seventy two hour window is the part people miss. If your child was bitten on a camping trip four days ago, the preventive dose has passed its usefulness and the plan becomes watching for a rash instead.
Doxycycline and Young Children
Here is a change worth knowing about if you were told otherwise years ago. The old rule kept doxycycline away from children under eight because of tooth staining. That concern came from older tetracyclines. Doxycycline binds calcium far less readily, and short courses are now considered appropriate at any age. The American Academy of Pediatrics updated this position in 2018, and prescribing followed: one analysis found use in young children with Lyme disease rose from 6.9 percent in 2015 to 67.9 percent in 2023 (2).
If someone tells you your five year old cannot have doxycycline for a tick borne illness, that is out of date.
Two Things That Barely Existed Here in 2012
Alpha gal syndrome is the big one. A bite from a lone star tick can leave you allergic to red meat, with reactions that come on hours after eating rather than minutes, which is why it goes unrecognized for so long. Between 2017 and 2022 there were just over 90,000 positive tests among roughly 295,000 people tested, concentrated across the South, Midwest, and Mid Atlantic (3). If you developed hives or stomach trouble in the middle of the night after a steak dinner and nobody can explain it, this belongs on the list.
Powassan virus is rarer and worse. It is a tick borne encephalitis with no treatment and no vaccine, and the case counts have climbed, from 64 reported across 2004 to 2013 up to 270 across 2014 to 2023, with a record year in 2024 (4).
Testing has changed too. Alongside the traditional two tier serology with a Western blot, there is now a modified two tier approach using two sequential immunoassays, which performs better in early disease and comes back faster.
What a Video Visit Is Good For Here
Tick bites suit this format better than most things.
What I need is mostly information, and a photograph. Where were you, geographically. When did you find it. How long had it been on, and if you do not know, was it flat or engorged. Did you keep it. A clear photo of the tick, even in a plastic bag, often settles the species question, and that is one of the three criteria.
A photo of a spreading rash is also something I can act on. Erythema migrans does not require a blood test to treat, and I would rather start treatment on a convincing rash than wait for serology that is frequently negative in the first couple of weeks.
One practical thing: put the tick in a bag and photograph it against something for scale before you throw it out. It costs you nothing and it changes the advice.
When To Be Seen Rather Than Call
Any neurologic symptom after a tick bite. Facial droop, a bad headache with a stiff neck, confusion, weakness. Palpitations, fainting, or shortness of breath, which can mean cardiac involvement. A rash with high fever and looking genuinely unwell. And the time sensitive one, a tick attached a day and a half or more in an endemic area, where you have seventy two hours to make a decision.
The Bottom Line
Most tick bites need nothing but a careful look and a few weeks of attention. The exceptions are specific and time limited. Know whether your bite meets all three criteria, keep the tick, and treat a spreading rash without waiting for a blood test.
Sources
1. Lantos PM, Rumbaugh J, et al. 2020 Guidelines for the Prevention, Diagnosis and Treatment of Lyme Disease. IDSA, AAN, and ACR. Clinical Infectious Diseases. 2021;72(1):e1-e48. https://academic.oup.com/cid/article/72/1/e1/6010652
2. Increased usage of doxycycline for young children with Lyme disease. Frontiers in Antibiotics. May 21, 2024. https://www.frontiersin.org/journals/antibiotics/articles/10.3389/frabi.2024.1388039/full
3. Kennedy J, et al. Geographic Distribution of Suspected Alpha-gal Syndrome Cases, United States, January 2017 to December 2022. MMWR. 2023;72(30):815-820. https://pmc.ncbi.nlm.nih.gov/articles/PMC10390090/
4. CIDRAP. West Nile accounted for most US arboviral cases in 2024 as Powassan cases hit record high. https://www.cidrap.umn.edu/west-nile/west-nile-accounted-most-us-arboviral-cases-2024-powassan-cases-hit-record-high
Related Reading
When to Use Telemedicine vs. Urgent Care: How I Spot the Sick One
Allergic Antibiotic Drug Reactions: Am I Truly Allergic to Penicillin?
2026 Travel Medicine Guide: Vaccines, Antibiotics, Safety Tips, and What You Don’t Need
Why is the Side of My face Drooping? All about Bell’s Palsy
Mosquitoes Are More Than a Nuisance to Your Health
Bee and Insect Stings
Scott Rennie, D.O.
Board Certified in Obesity Medicine and Family Medicine
This blog is for educational purposes only and does not constitute individual medical advice. Always consult your own physician before making changes to your health, medications, or treatment plan.