Bite comparisons
Most identification questions are really a choice between two options. These pages put the likely pair side by side on the details that actually separate them — position on the body, arrangement, timing and what happens over the following days.
- Bed bug bites vs flea bitesBed bug bites run in lines on uncovered skin; flea bites cluster below the knee. Position and pattern separate them in seconds.
- Bed bug bites vs mosquito bitesMosquito bites appear within minutes and fade in days. Bed bug bites appear hours later, run in lines, and itch for a week or more.
- Chigger bites vs flea bitesChigger bites cluster along sock lines and waistbands after time in tall grass. Flea bites hit ankles and shins, usually with a pet at home.
- Mosquito bites vs no-see-um bitesNo-see-um bites arrive in dozens of tiny fierce dots at dusk near water. Mosquito bites are fewer, larger and softer.
- Black widow vs brown recluse bitesWidow bites cause spreading muscle cramps within hours. Recluse bites are often painless at first and change over days. Both warrant medical care.
- Deer tick vs lone star tickWhich tick bit you changes what to watch for: Lyme disease from blacklegged ticks, alpha-gal meat allergy and ehrlichiosis from lone star ticks.
- Yellowjacket sting vs bee stingA stinger left in the skin means honey bee. Repeated stings from one insect at a picnic mean yellowjacket. What to do differs.
- Scabies vs bed bug bitesScabies is symmetrical, in skin folds, and needs prescription treatment. Bed bug bites are on uncovered skin and stop when the room is treated.
- Fire ant vs yellowjacket stingA sterile white pustule a day later means fire ant. Immediate intense pain with big swelling and no pustule means yellowjacket.
- Horsefly bites vs deer fly bitesBoth hurt immediately. Horseflies target legs and back and leave a bleeding cut; deer flies circle the head and bite the scalp and neck.
- Flea bites vs mosquito bitesFlea bites are small, hard and clustered below the knee with a central dot. Mosquito bites are larger, softer and scattered on exposed skin.
- Spider bite or skin infection?Most "spider bites" are bacterial skin infections. What actually distinguishes them, and why the difference changes the treatment.