Ticks are small, blood-feeding arachnids, not insects. When you ask, “what are ticks in a person,” you may be referring to a tick attached to your skin, feeding, or the bite and illness risk it can create.
These external parasites can carry pathogens that cause disease. Many tick bites do not lead to illness.
If you find a tick attached to you, remove it promptly with fine-tipped tweezers, clean the area, and watch for symptoms such as fever, unusual fatigue, or a spreading rash. The tick’s appearance, attachment time, location, and your symptoms help a clinician assess your risk.
How Ticks Attach and What a Bite May Look Like
Ticks climb onto people from vegetation, including tall grass, shrubs, and leaf litter, especially in wooded areas. Their mouthparts anchor in skin while tick saliva can numb the area, so a tick bite may go unnoticed.
Where Ticks Commonly Hide on the Body
After outdoor exposure, check warm, less visible areas carefully:
- Scalp, hairline, and behind the ears
- Neck, armpits, and elbows
- Waistband, groin, and buttocks
- Behind the knees
- Between the toes
A tick may look like a tiny dark, brown, or gray spot. Check your clothing and gear as well as your skin, since ticks can move before attaching.
Attached, Engorged, or Already Detached: What You May Notice
An attached tick may appear flat and seed-like. After feeding, an engorged tick becomes rounder and larger.
You may see a small red bump or localized irritation after removal, similar to a minor insect bite. Watch for expanding redness, warmth, drainage, increasing pain, or a rash that develops days later.
Save a clear photograph of the tick and bite if you can.
Hard Ticks and Soft Ticks
Hard ticks, classified in the family Ixodidae, have a firm shield-like covering and often remain attached for hours or days. Many U.S. tick-borne infections involve hard ticks.
Soft ticks, in the family Argasidae, have a leathery appearance and usually feed more briefly. Risk varies by species, geography, and season.
During tick season, which can vary by region and weather, regular checks remain useful.
Safe Tick Removal and Immediate Next Steps
Prompt tick removal reduces the time a tick can feed. Use fine-tipped tweezers to remove the tick.
Avoid irritating the tick. Seek medical advice if you cannot remove the mouthparts or develop symptoms.
How To Remove a Tick With Tweezers
- Use clean, fine-tipped tweezers.
- Grasp the tick as close to the skin as possible, near its mouthparts.
- Pull upward with slow, steady pressure.
- Avoid twisting, jerking, crushing, or squeezing the tick’s body.
- If mouthparts remain, remove them with tweezers if they come out easily. Do not dig deeply into your skin.
- Wash your hands afterward.
Do not cover the tick with petroleum jelly, nail polish, or oil, and do not burn it. These methods can irritate your skin and may increase handling or contact with tick fluids.
Cleaning the Bite and Saving the Tick if Needed
Clean the bite and your hands with soap and water or an alcohol-based cleanser. A cool compress can ease mild irritation.
You may place the tick in a sealed container or zippered bag, or take a clear photograph. Identification can help a clinician assess the risk, although testing a tick does not reliably determine whether you became infected.
Note the date, location, and estimated attachment time.
When Preventive Antibiotics May Be Considered
A clinician may consider preventive antibiotics after a high-risk deer tick bite in certain circumstances, including a likely infected tick, suitable local Lyme disease risk, prolonged attachment, and treatment started promptly.
Preventive medication is not appropriate for every bite or every tick-borne disease. The Centers for Disease Control and Prevention recommends discussing the specific tick, exposure location, attachment duration, and your health history with a healthcare professional rather than taking leftover antibiotics.
Symptoms That Need Medical Attention
A tick bite can cause temporary redness without illness. Symptoms may appear days or weeks later.
Contact a clinician for a new rash or flu-like illness after exposure. Seek emergency help for breathing problems, severe weakness, or signs of anaphylaxis.
Normal Skin Irritation Versus a Concerning Rash
A small, localized red area around the bite can occur soon after attachment or removal. It should not steadily expand or become increasingly painful, hot, swollen, or draining.
Erythema migrans, sometimes called a bullseye rash or bull’s-eye rash, can expand over several days after a bite. It does not always form a perfect ring, may feel warm, and may occur without itching.
Contact a clinician promptly if you notice a spreading rash.
Early Flu-Like Symptoms After Exposure
Seek medical advice if you develop fever, chills, headache, fatigue, body aches, muscle aches, muscle pain, joint pain, nausea, or swollen lymph nodes after a possible bite. These symptoms can occur with several tick-borne infections and may not identify the cause by themselves.
Tell the clinician when and where you may have encountered the tick, whether it was attached, and whether you saved a photo or specimen. Do not wait for a rash if you feel increasingly ill.
Emergency Allergy and Neurologic Warning Signs
Call 911 for shortness of breath, throat or facial swelling, faintness, widespread hives, or other signs of anaphylaxis. A tick bite can also precede alpha-gal syndrome, a delayed meat allergy that may cause hives, stomach symptoms, or breathing difficulty after eating mammalian meat or products.
Progressive weakness, trouble walking, difficulty speaking, swallowing problems, or breathing changes require emergency evaluation. Rarely, tick paralysis can cause ascending weakness that improves after the tick is removed, yet urgent care remains essential.
Tick-Borne Illnesses and Prevention
Tick-borne diseases, also called tickborne diseases, result from bacteria, viruses, or other pathogens transmitted during feeding. Risk depends on the tick species, region, season, attachment time, and pathogen.
Diseases Linked to Common U.S. Tick Species
The deer tick, also called the black-legged tick, black-legged ticks, or blacklegged tick, belongs to the genus Ixodes. Depending on region, these ticks can transmit Lyme disease, anaplasmosis, babesiosis, Borrelia, and Powassan virus.
The lone star tick, or Amblyomma americanum, is associated with ehrlichiosis, tularemia, STARI or southern tick-associated rash illness, and alpha-gal syndrome.
The American dog tick and dog ticks, including Dermacentor variabilis, can transmit Rocky Mountain spotted fever or RMSF and tularemia.
Other U.S. species include the Rocky Mountain wood tick, Dermacentor andersoni, which can transmit Colorado tick fever and tick paralysis. The brown dog tick, Rhipicephalus sanguineus, can transmit RMSF in some settings.
The Gulf Coast tick and Pacific Coast tick may also spread diseases. Regional ticks can also spread ehrlichiosis, anaplasmosis, tick-borne relapsing fever, Heartland virus disease, Pacific Coast tick fever, and other infections involving Rickettsia, Francisella tularensis, bacteria, or viruses.
Reducing Exposure Before and After Outdoor Time
The CDC’s tick prevention guidance emphasizes reducing exposure as your best defense. Before going outdoors:
- Use an EPA-registered insect repellent containing DEET or another effective ingredient.
- Treat clothing and gear with permethrin as directed.
- Wear long sleeves, long pants, and light-colored clothing.
- Stay near the center of cleared trails and avoid brush and tall grass.
Afterward, perform a full tick check, including your scalp, hairline, ears, armpits, waist, groin, knees, and between your toes. Showering soon after outdoor activity, checking clothing, and putting washable items in a hot dryer can help remove unattached ticks.
When To Seek Care and What To Tell a Clinician
Seek care for fever, chills, headache, fatigue, muscle or joint pain, nausea, swollen lymph nodes, a spreading rash, or worsening redness after a possible bite.
Get emergency help for breathing difficulty, severe weakness, facial swelling, or neurologic changes.
Show the clinician the tick’s photograph or specimen if you have it. Tell them the date and location of exposure.
Explain how long the tick may have been attached and share any travel history. Mention whether you used tick repellent, if the tick looked engorged, and when your symptoms began.
