Manchester, NH
Catholic Medical Center
100 McGregor St, Manchester, NH 03102
Level IIIER 24/7
(603) 668-3545StingAnchor Pest · New Hampshire
Yellow Jacket Sting in New Hampshire — First-Aid + Why the Nest Has to Go
TL;DR
A yellow jacket sting hurts sharply for 1–2 hours and can itch up to a week — ice, an oral antihistamine, and ibuprofen handle a normal local reaction at home. But a single yellow jacket can sting again and again, and stings keep happening until the nest is gone. If you were stung in Manchester, Nashua, Concord, or anywhere across southern New Hampshire, Anchor Pest Services finds and removes the nest the same day.
NH License #782664Family-owned since 2017Updated Jun 2026
Pain duration
1–2 hr
for typical local reaction
Swelling peak
48 hr
normal local <4 inches across
Schmidt pain index
2.0
hot and smoky
Stings per yellowjacket
5–20
barbless stinger — repeated stings
Overview
Why You Got Stung — and Why It Will Keep Happening
Yellow jackets don't die after one sting like a honey bee. The same worker can sting you 5 to 20 times, and alarm pheromones released at the sting site recruit the rest of the colony to defend their nest. If you were stung in your yard, on your deck, near a doorway, or beside a stone wall, there's an active colony within about 1,000 ft — often much closer. By August in southern New Hampshire a single eastern yellowjacket colony can hold 2,000 to 5,000 workers, and late-summer foragers turn aggressive around food, drinks, and trash. The longer the nest stays, the larger and more defensive it gets.
New Hampshire context
What This Means in Southern New Hampshire
New Hampshire's dominant ground-nesting yellowjacket is the native eastern yellowjacket (Vespula maculifrons), which favors lawn edges, abandoned rodent burrows, and the base of iconic NH stone walls. The invasive German yellowjacket (Vespula germanica) prefers wall voids and attics in older Manchester, Nashua, and Concord housing stock. Colonies peak from mid-August through mid-September and collapse with the first hard frost — about October 19 at 50% probability in Manchester per NOAA. UNH Cooperative Extension and NH DHHS resources are the local authoritative references; for any reaction beyond the sting site, the Northern New England Poison Center (1-800-222-1222) covers NH, ME, and VT 24/7.
Species present in NH
- Eastern yellowjacket
- German yellowjacket
- Bald-faced hornet
- Aerial yellowjacket
Peak activity
mid-August through mid-September
Service area
ManchesterNashuaConcordDerryBedfordSalemHudson
First-frost anchor: Manchester first hard frost ~Oct 19 (50%) / Oct 29 (80%) per NOAA
Per UNH Cooperative Extension, yellowjacket colonies in NH peak in late summer and become most aggressive when food sources dwindle.
Symptom tiers
Three reactions — local, large local, anaphylaxis
Three buckets cover essentially every yellowjacket sting. The big jump in risk happens between tier 2 and tier 3.
Tier 1
0%
Local Reaction
Tier 2
5–10% of stings
Large Local Reaction
Tier 3
0%
Systemic Reaction (Anaphylaxis)
Tier 1
Local Reaction
Who gets it
~90% of stings
What to expect
Sharp pain, redness, and swelling at the sting site — typically under 4 inches across. Resolves in 3–7 days. Itching can linger up to a week.
What to do
Ice 10-on/10-off the first hour. Oral antihistamine (diphenhydramine 25–50 mg, cetirizine 10 mg, or loratadine 10 mg — do NOT stack). Ibuprofen 400 mg with food for adults (no aspirin under 18). 1% hydrocortisone cream once itch dominates.
Tier 2
Large Local Reaction
Who gets it
~5–10% of stings
What to expect
Swelling extends more than 4 inches across or covers a major joint. Peaks at 48 hours. Looks alarming but is NOT a sign of true allergy.
What to do
See a doctor within 24 hours. Prednisone may be prescribed. Continue oral antihistamine. Watch for any spreading hives or systemic symptoms.
Tier 3
Systemic Reaction (Anaphylaxis)
Who gets it
<1% of stings (about 3% of adults lifetime risk per ACAAI)
What to expect
Wheezing, throat tightness, hives spreading away from the sting site, weak pulse, dizziness, fainting, vomiting, sense of impending doom. Onset 5–30 minutes.
What to do
Use epinephrine FIRST if prescribed (autoinjector to outer thigh), call 911 SECOND. Lay flat unless vomiting. Go to ER even if epinephrine resolved symptoms — biphasic reactions occur in up to 20% of cases.
Time-critical
Schmidt sting pain index
How bad does a yellowjacket sting really hurt?
Justin Schmidt rated the yellow jacket sting at 2.0 on his 1–4 pain index — described as 'hot and smoky, lasting up to 10 minutes.' What makes yellowjackets dangerous isn't peak pain, but how often they can deliver it.
- Sweat bee1.0
Light and ephemeral, almost fruity
- Fire ant1.2
Sharp, sudden, mildly alarming
- Bald-faced hornet2.0
Rich, hearty, slightly crunchy
- Yellow jacketYellowjacket2.0
Hot and smoky, almost irreverent
- Honey bee2.0
Like a matchhead pressed into the skin
- Paper wasp3.0
Caustic and burning, with a distinctly bitter aftertaste
- Bullet ant4.0
Pure, intense, brilliant pain — like walking over flaming charcoal
Recovery timeline
What happens hour-by-hour after a sting
- 0–10 minModerate
Sharp pain peaks. Burning at sting site. Mild redness begins.
Action: Move 30+ ft from where you were stung — alarm pheromones recruit more workers.
- 10 min – 2 hrModerate
Pain phase. Localized swelling rises, redness expands a few inches.
Action: Ice 10 min on / 10 min off. Wash with soap and cool water. Take oral antihistamine + ibuprofen 400 mg with food (adults).
- 2–24 hrMild
Pain fades, itch begins to dominate.
Action: Apply 1% hydrocortisone cream when itch starts (around hour 6).
- 24–48 hrMild
Swelling peaks. Normal local reaction stays under 4 inches across.
- 48 hr – 3 daysMild
Redness fades. Most localized swelling subsides.
- 3–7 daysMild
Most signs resolve. Itching may continue intermittently.
- 7+ daysSevere
If redness expands, pus appears, red streaks spread, or fever develops — that's secondary infection.
Action: See a doctor or go to ER.
First-aid protocol · step-by-step
Eight steps — the home protocol that actually works
- 01
Move 30+ ft from where you were stung
Yellow jackets release alarm pheromones when they sting — more workers are on the way. Walk calmly with your face covered. Do not swat.
Don't run if a nest is nearby — you may run through the swarm.
- 02
Wash the sting site with soap and cool water
Yellow jackets don't leave a stinger behind, so there's nothing to scrape — just rinse for 60 seconds.
soapcool water - 03
Ice 10 minutes on, 10 minutes off — for the first hour
Wrap an ice pack in a thin towel. Reduces both pain and swelling.
ice packthin towel - 04
Take an oral antihistamine (adult dosing)
Diphenhydramine 25–50 mg (Benadryl — drowsy) OR cetirizine 10 mg (Zyrtec) OR loratadine 10 mg (Claritin). Do NOT stack.
For children, consult a pediatrician for dosing — do not use adult doses.
- 05
Add ibuprofen 400 mg with food (adults)
Reduces pain and inflammation. Take every 6–8 hours as needed.
No aspirin for anyone under 18 (Reye's syndrome risk).
- 06
Apply 1% hydrocortisone cream (starting hour 6)
By around hour 6 the itch dominates. Hydrocortisone cream eases it.
1% hydrocortisone cream - 07
Watch for 30 minutes
Monitor for hives spreading beyond the sting site, breathing changes, throat or face swelling, dizziness, or vomiting.
Any of those signs = anaphylaxis. See step 8.
- 08
If systemic signs appear: epinephrine FIRST, 911 SECOND
Inject epinephrine into outer thigh if prescribed. Then call 911. Lay flat unless vomiting. Go to ER even if symptoms resolve.
Biphasic reactions occur in up to 20% of cases — ER follow-up is mandatory.
Emergency · do not miss
Red flags — call 911 immediately
Emergency · red flags
Any of these signs after a sting = anaphylaxis. Use epinephrine first if prescribed, then call 911. Lay flat unless vomiting.
Warning signs
- Wheezing, throat tightness, hoarseness, or difficulty breathing
- Hives spreading away from the sting site
- Weak pulse, dizziness, fainting, or hypotension
- Facial, lip, tongue, or throat swelling
- Vomiting or diarrhea after the sting
- Sense of impending doom
Call 911 when
- Any of the signs above
- Sting to the mouth, throat, or eye
- Multiple stings (10+) in a child or 50+ in an adult
- Known venom allergy, regardless of current symptoms
4 ERs · 1 Poison Center · 24/7
New Hampshire emergency contacts
If you're in southern New Hampshire and develop a systemic reaction, call 911. These are the closest 24/7 emergency departments in Anchor's service area:
Poison center · NH, ME, VT
Northern New England Poison Center
24/7 · Text POISON to 85511
Manchester, NH
Elliot Hospital
1 Elliot Way, Manchester, NH 03103
Level IIER 24/7Pediatric ER
(603) 669-5300Only pediatric ED in Anchor's core service area
Nashua, NH
Southern New Hampshire Medical Center
8 Prospect St, Nashua, NH 03060
Level IIIER 24/7
(603) 577-2000Concord, NH
Concord Hospital
250 Pleasant St, Concord, NH 03301
Level IIIER 24/7
(603) 225-2711Long-term protection
Venom immunotherapy — the only cure for sting allergy
Venom immunotherapy
If you've had any systemic reaction to a yellow jacket sting in the past, talk to an allergist about venom immunotherapy. It's the only treatment that prevents future life-threatening reactions.
Effectiveness data: ACAAI / JACI guidelines (Golden et al.)
Effectiveness
95–98%
Course
3–5 years
Candidacy
Any prior systemic reaction; documented venom-specific IgE
NH allergy practices
NH Allergy & Asthma Associates
Manchester · 100 Hitchcock Way, Manchester, NH
Asthma & Allergy Affiliates
Portsmouth & Bedford
Southern NH Asthma & Allergy
Nashua
Myth-busting
Folk remedies that don't work
Don’t do
Meat tenderizer paste
Why it fails
Venom is injected deep into tissue — papain (the enzyme) can't reach it through skin. No controlled studies support efficacy.
Do this instead
Ice + oral antihistamine + ibuprofen.
Don’t do
Baking soda paste
Why it fails
Yellow jacket venom is slightly alkaline already; baking soda doesn't neutralize it. The mild cooling effect from evaporation is the only real benefit.
Do this instead
Ice does the same thing more effectively.
Don’t do
Toothpaste
Why it fails
No clinical evidence. Menthol may give a brief cooling sensation but does nothing for venom or swelling.
Do this instead
1% hydrocortisone cream once itch dominates.
Don’t do
Vinegar
Why it fails
Bee venom is acidic, wasp venom is alkaline — but neither is meaningfully neutralized by household vinegar applied topically.
Do this instead
Cool water rinse, then ice.
Don’t do
Mud or clay
Why it fails
Cooling effect only. Adds infection risk if skin is broken.
Do this instead
Soap + cool water + ice.
Don’t do
Tobacco
Why it fails
No evidence. Adds nicotine absorption risk through broken skin.
Do this instead
Standard first-aid protocol above.
Pet sting
What to do if your dog or cat is stung
Dogs snap at flying insects and often take stings inside the mouth, lip, or throat — where airway swelling can develop in under 30 minutes. Cats more often react with paw-pad or facial stings.
Airway-risk signs
- Drooling more than normal
- Facial or muzzle swelling
- Labored breathing or wheezing
- Pawing at the mouth
- Vomiting within 30 min of the sting
- Collapse or sudden weakness
NH emergency vets
Veterinary Emergency Center of Manchester
Manchester
(603) 222-0032Port City Veterinary Referral Hospital
Portsmouth
(603) 433-0056
Common questions
Frequently asked
Anchor Pest Services
Yellowjackets gone — and they stay gone.
Same-day service across Southern New Hampshire. NH-licensed #782664. Family-owned since 2017. We handle ground, wall, and aerial nests with EPA-registered products and a 30-day re-treat guarantee.
NH License #782664Manchester, NH 03103Monday-Friday 8am-5pm