Bug Bite Identification Help
Use the pictures and information below to help you identify bug bites and stings.
Bite Symptoms & Appearance Table
- Redness & swelling
- Moderate pain
- Allergic reactions: sneezing, wheezing, hives, nausea, vomiting, diarrhea, sudden anxiety, dizziness, difficulty breathing, chest tightness, itching or swelling of the face.
- Red welts (small, flat or raised )
- Red rash
- Bites can appear in tight lines of multiple, small, red marks
- Initial burning sensation
- Possible to have no reactions, and bite goes unseen
May go unnoticed for a few days. One bug may bite multiple times. Read more about bed bugs bites.
- Blisters or welts
- Caused by a chemical called cantharidin
- Occurs within a few hours of contact
- No lasting skin damage
Do not crush blister beetles on skin, instead gently remove them. Read more about blister beetle warts.
Brown Recluse Spider
- Reddening and swelling
- Blister may appear at the bite site
- Mild skin irritation (itching)
- Skin lesions
- Fever, convulsions, nausea and muscle pain
Fatalities have never been verified. Deep scarring can occur if left untreated. Read more about brown recluse bites.
- Red welts or lumps
- Semi circular pattern for multiple stings
- Becomes a blister
- Burning, stinging sensation
One ant may sting multiple times. Read more about fire ant stings.
- Red spots surrounded by reddened haloes
- Often found on legs and feet
- Very itchy
Contact doctor immediately if bite wounds excrete pus. Read more about flea bites.
- Bleeding (horsefly feeds on the blood)
- Reddish bumps
- Painful bites
Aggressive biters. Possibility of infection if not treated with antibacterial medications. Read more about horsefly bites.
- Bites in pubic hair, armpit, or eyebrow
- Bluish-grey skin reactions sores
- Small red bumps
- Itching that often gets worse at night
- Tiny white eggs called nits may be found in hair
Itching may start soon after getting bitten or it may not start for up to 2-4 weeks after contact. Read more about lice bites, including head lice and body lice.
- Hard bumps
- Bumps can be puffy with a red dot in the middle
- Bites may appear as small as blisters instead of bumps
For children, large swelling or low grade fever may accompany bites. Read more about mosquito bites.
- Pimple-like rashes usually on the wrist, elbow, armpit, nipple, waist, belt-line, buttocks, and between the fingers
- Small, raised lines on the surface of the skin
- Intense itching that worsens in the evening
- Numbness, tingling and swelling around the sting site
Caused by the itch mite that does not actually bite or sting, but burrows and eats human skin. Read more about scabies.
- Two puncture marks close together
- Widow spiders: muscle cramps and pain, increased blood pressure, sweating, skin rash
- Violin spiders: anemia, blood in the urine, fever, rash, nausea, vomiting and even coma (rare)
- “Bulls-eye” rash can be signs that a tick had Lyme Disease
- Initial sign is redness around the bite area
- Burning sensation
Fever, headache and fatigue are early signs of Lyme Disease.