Symptoms of a Tick Bite

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It is not always possible to avoid a tick bite, especially during the warmer months when you are outside. Even with a thorough inspection of your clothes, skin, and hair, it can be difficult to spot a tick before it bites because even adult ticks may be only the size of a sesame seed.

These tiny insects can attach anywhere on your body, but they favor hard-to-see places such as the groin, armpits, and scalp.

How Common Are Tick Bites?

The average number of tick bite-related emergency department visits in the month of May for the years 2017, 2018, and 2019 was 145. This number does not accurately reflect how many tick bites occurred but were not reported, though, and should be seen as an underestimate of the actual tick bite count.

You may not even notice a tick bite, and symptoms may or may not be present after a few days. If you think you or someone you love has had a tick bite, the best thing to do is monitor for symptoms and call your doctor if you develop signs of an infection.

Types of Tick Bite-Related Rashes

Verywell / Katie Kerpel

Frequent Symptoms

If you have a tick bite, you should watch for symptoms that indicate an infection. The first sign typically is a rash.


Types of tick bite-related rashes include:

  • Erythema migrans (EM), or Lyme disease rash: The EM rash usually is not painful or itchy. In 70%–80% of people, the rash will appear between three to 30 days after the bite and may gradually expand to 12 inches (30 centimeters) or more. It looks like a bull's-eye in most cases.
  • Southern tick–associated rash illness (STARI): This rash is nearly identical to the EM rash, but it is caused by the lone star tick.
  • Rocky Mountain spotted fever (RMSF) rash: Around 10% of people infected will not have a rash, while others will develop a rash after a fever. The rash usually is small, flat, pink, and not itchy on areas like your wrists, forearms, and ankles. It can later present as tiny red or purple spots. Rash occurs in 35%–60% of people with RMSF. 
  • Tularemia: Rather than a proper rash, you may see an ulcer forming at the bite site. You may also experience swelling of nearby lymph nodes.
  • Ehrlichiosis: This rash can take many shapes and vary widely in appearance. It occurs in 30% of adult patients and 60% of children who are bitten by an infected tick.  

Other Symptoms

Symptoms that can occur in the absence of or in addition to a rash after a tick bite include:

Allergic Reactions to a Tick Bite

People who are allergic to ticks can experience the following symptoms after a bite:

  • Pain, swelling, or a burning sensation at the bite site
  • Rash or allergic skin irritation
  • Blisters
  • Respiratory difficulties, if severe

Rare Symptoms

A tick bite, in rare cases, can lead to tick paralysis. This type of paralysis is believed to be caused by a toxin in tick saliva. The good news is that the symptoms are temporary. After removing the tick, the symptoms should subside.

Rare symptoms may begin between four and seven days after tick attachment and can include:

  • General feelings of sickness 
  • Weakness
  • Progressive neurological deficits, such as coordination issues, swallowing difficulties, and slurred speech
  • Acute, ascending flaccid paralysis (rapid onset of weakness or paralysis and reduced muscle tone)

Symptoms that don’t resolve could be a sign that something else, such as a neurological condition, is causing your symptoms. Examples include Guillain-Barré syndrome (a rare autoimmune disorder that attacks the nerves) and botulism (acute food poisoning that can cause muscle weakness and paralysis).


Complications from a tick bite depend on which pathogen the tick is carrying and whether you are infected after exposure.

Health complications can include:

  • Spotted fevers ranging from mild to life-threatening: Unless it is RMSF, you will notice a dark scab at the tick bite site along with the typical symptoms. Examples include the newly found 364D rickettsiosis.
  • Anaplasmosis: Along with typical symptoms, you can expect nausea, vomiting, diarrhea, and loss of appetite.
  • Tick-borne relapsing fever: Found in 15 states, this condition has recurring symptoms that follow a predictable pattern of fever for three days, then seven days of being fever-free, then another three days with fever, and so on until antibiotic treatment is started.
  • Babesiosis: Similar to malaria, this disease affects red blood cells. Symptoms include high fever, chills, and dark urine.

When to See a Doctor

If you have a tick bite, take a picture of the area as soon as possible so you have a baseline to which you can compare changes. 

You should also call your doctor if:

  • You think the tick has been attached to you for several hours or even a day.
  • Part of the tick remains under your skin.
  • You see a rash developing around the bite area, especially a bull's-eye rash.
  • You see a rash on other areas of your body.
  • You begin to develop flu-like symptoms after a tick bite, including fever, headache, fatigue, stiff neck or back, or achy muscles or joints.
  • The bite area looks red, feels warm to the touch, is painful, starts spreading, or begins oozing pus.
  • Symptoms persist despite treatment.


There are many types of tick-borne illnesses, but the symptoms of a tick bite are very similar. Many people do not develop symptoms after they're bitten by a tick. However, if you have symptoms and live in a tick-prone area, it's better to call your doctor to get an evaluation.

9 Sources
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
  1. Centers for Disease Control and Prevention. Tick bites by week/month.

  2. Centers for Disease Control and Prevention. Symptoms of tick-borne illness.

  3. Lother SA, Haley L. Tick paralysis. CMAJ. 2017 Oct 30;189(43):E1341-E1341. doi:10.1503/cmaj.170868

  4. Centers for Disease Control and Prevention. Diseases transmitted by ticks.

  5. Centers for Disease Control and Prevention. Anaplasmosis.

  6. Centers for Disease Control and Prevention. Relapsing fever symptoms.

  7. Yale Medicine. Tick-borne illnesses

  8. Cleveland Clinic. Tick bites.

  9. Johns Hopkins Medicine All Children’s Hospital. First aid: tick bites

By Michelle Pugle
Michelle Pugle, BA, MA, is an expert health writer with nearly a decade of contributing accurate and accessible health news and information to authority websites and print magazines. Her work focuses on lifestyle management, chronic illness, and mental health. Michelle is the author of Ana, Mia & Me: A Memoir From an Anorexic Teen Mind.