When Chigger Bites Escalate from Nuisance to Dangerous

Chiggers live in the grass and they bite you in the ass. Invisible mites, arachnids, nuisance to many, medically dangerous to some, ignored by quite a few…I could really do quite well without them.

They really will bite you in the butt. I’ve had bites on my right foot, on the shins where the tops of my socks hit, around the waistband of my jeans, on both buttocks, in the groin, on my right testicle, back of the upper arms, in and/or near the armpit, you name it.

I’d read of chiggers but had not encountered them prior to July of 2010. Red lice, head lice, revenooers too–wait, now I’m mixing up parasitic critters with the old White Lightning hit song which, come to think of it, was also about parasitic critters, albeit the governmental taxation sort of parasites.

[*Bonks self upside head to get things working again.*]

Okay. I’m back.

My wife and I moved to southern Cochise County, Arizona, in April of 2009. She’d lived in this county before, but it was my first go at residing in the desert, one mile north of the Mexican border. I’d not realized chiggers lived this far west. Aren’t those things all east of the Mississippi?

Oh, they’re here, all right!

As it turned out, the monsoon rains didn’t hit this area all that hard in ’09. Locals (including Pam) called it a “nonsoon” year. There wasn’t all that much explosive growth in vegetation, which meant it was pretty easy to stay in the clear, away from tall grass that hides fun things like Mojave green rattlesnakes, sizeable centipedes (5″ being most common here), scorpions, and yes, chiggers.

2010 was different. Chigger bites dotted my body by the time the summer wet season was over. They were irritating, itchy, but no more than that. Located off grid and having a long way to go to upgrade our living conditions, it wasn’t practical to scrub down in a shower every day or to take daily Epsom salt baths, which a friend who lives in Georgia remembered having to do as a child. I wasn’t really happy with the bites but didn’t find them to be too much of a problem.

Frankly, I’d just scrape the “crud” off with a fingernail–that being the feeding hole the chigger had made through the skin, a bit of buildup from reaction to the mild venom they carry, and most likely the invisible chigger itself. After that, it was simply a matter of hitting the bite site every once in a while with spray antiseptic and waiting it out. Each bite would itch noticeably for a week or so, sometimes taking as long a a month to disappear completely, but that was it.

Until this year, 2013. I’ve learned about preventative measures. We have a pressurized water supply now, a clawfoot bathtub with shower, all the amenities. On the days when exposure to “chigger grass” was unavoidable, such as when running the weed whacker, I made sure to bathe thoroughly after the work shift was done. Stepping in (or even on) any kind of vegetation was avoided as much as possible. When a brief exposure occurred, perhaps brushing by a single clump of grass or pulling a weed by hand, I brushed everything off (with my hands) as vigorously as possible immediately after contact.

These precautions worked…for a while. Chiggers are easy to brush off when they first arrive on your clothing or skin, even if you can’t see them. They’re also easy to wash off, at least most of the time. They don’t bite immediately. Instead, they start hunting for the perfect spot to go digging for gold–which, for them, is a batch of your liquefied skin cells.


Well, it’s like this, at least according to those who claim to know: Chiggers eat skin, but in phases. In phase one, their itty bitty short mouth parts take a chomp out of your surface skin…and then they spit in the hole. Or something like that. The spit starts dissolving skin cells whether you like it or not–or are even aware of it, for that matter. When the skin-spit combo gets to be a nice, goopy soup, the chigger slurps it up, high powered nutrition through a straw made by dissolving a piece of you.


When you scratch a bite site, the chigger larva is usually dislodged, falls off, and soon dies. I like that part. You bite me, redbug, you die! (They apparently call chiggers redbugs in the southeastern states.)

Admittedly, the baby chigger you just murdered does get its revenge. The goopy slurp left behind, having been scratched, is now exposed to air and hardens into a nice, irritating, crusty cap…which begs to be scratched all over again. Secondary infections from the scratching are common. Itching never quits quickly; it always hangs on for at least five days and often a lot longer.

In the end, I managed to avoid getting bitten this year until August 15, a new record for me (excluding the nonsoon year of 2009).

Unfortunately, the chiggers made up for that late start with a vengeance. I seem to be developing a serious allergy, or at least a major sensitivity, to the little bugs with their multiple legs and their nasty little biting mouth parts.

What had in earlier years been an irritating but minor nuisance…had developed into a significant medical problem, a potentially dangerous situation.

No bite from earlier years had flared into the sort of inflammation seen in the photo below. This picture was taken minutes ago, by flashlight, of my latest bite. It’s located on the inner left thigh. It itches, it burns, it does not make me love chiggers a whole lot.

Chigger bite on a 70 year old Caucasian male's left inner thigh, Cochise County, Arizona, September 24, 2013.

Chigger bite on a 70 year old Caucasian male’s left inner thigh, Cochise County, Arizona, September 24, 2013.

Allergies have not been a problem for me…until now. A big ol’ bald hornet came flying straight at me from across the Clark Fork River in Missoula, Montana, when I was eight years old. I watched it come, fascinated, never dreaming it was going to slam into me right between the eyes at full throttle, stinger first, leaving a clearly visible hole while producing no swelling, no inflammation whatsoever.

Mosquito bites, bee stings, no problem.

Perhaps I’ve changed. Who knows?

Remarkably enough, chiggers do not bother every human. Neither my stepson (Zach) nor our friend and neighbor (Robert) have any problem whatsoever with the little buggers, and these two men have lived right here in Cochise County from the days they were born.

Nor do they bother people who live in most of the states where I lived the first 65 years of my life, which is why I’d not encountered them until moving to the southwest.

Beyond that, they’re only active when the humidity is relatively high. There appears to be a magic cutoff point: I rarely get a chigger bite when the humidity is below 45 percent. (I say “rarely” because I did once hike through winter dead grass in January with the humidity down in the 30’s…and got a bite. But only once.)

In the southeast, that most likely means they’re active year around. In Cochise County, though, we “only” have a few months of each year to worry about. Once the monsoons hit, usually in late June or early July, the humidity jumps up into the Chigger Zone and stays there for some time after the rains have tapered off to pretty much nothing in September. The air doesn’t dry out all that quickly; today (September 24) our little weather station is showing the humidity at 51%.

Still very much in the Chigger Zone.

We have a lot of grass and weeds that need to be whacked. Except for the essential pathways, though, the vegetation will be left alone until somewhere around early November. The grass will be dry then, with few if any chiggers chomping.

Fortunately, the Internet has some great (i.e. easy to understand) articles on how chiggers work. One of the best (in my opinion) is by The Dragonfly Woman. Her complete article is well worth reading. Here’s a teaser.

Chiggers don’t just eat the top layer of skin cells though – they go for the good stuff underneath. To do this, they pierce the skin with their chelicerae, then inject saliva to digest the tissue and expand the wound. The goop that is produced is slurped up by the chigger. Remarkably, they also inject compounds into the wound that cause an immune response in the host animal, one that hardens the tissue around the bite site. In essence, the hardened tube-shaped structure that forms (called a stylostome) is a straw that expands deeper and deeper into the host. The chigger injects more saliva and sucks up more liquified tissue as the stylostome gets longer and longer. That’s right! Chiggers have tiny mouthparts, but they use their host’s own immune system to enlarge their mouthparts into a stylet like those of mosquitoes or a beak like those found in the true bugs! Now if that isn’t amazing, I’m not sure what is.

According to my research, it’s the larval stage of the chigger (six legs) that does the biting. The later nymph and adult stages have eight legs and do not bite.

Thus, the six legged biter, though too small to see without a microscope, looks like an insect–a tick or some such. But it’s not. It’s a really, really mean baby arachnid. So there.

Some online sources of chigger information are about as disturbing as the chiggers themselves. Example: One “chigger distribution map” brings up far more questions than answers.

–Why does it show Arizona “clear” of chiggers (white) when we know we’ve got plenty of them every summer?

–Are chiggers really active that far north? North Dakota, for cry-yi? Is no place safe?

–Is California truly clear of the little monsters? After all, California has everything else; how could it not have chiggers?

–Did the maker of this map know what he (or she) was talking about?


There seems to be a consensus that it’s the scratching (and subsequent minor infection) that generally causes the most inflammation in severe situations. I’m not sure that’s right, but I do know one bite about a month ago had some pretty serious consequences. The bite was situated on the back of my upper right arm. As the days went by, the inflammation spread all the way down to envelope the entire elbow. At one point, the elbow was swollen so much that it looked more like a rattlesnake bite (which I’ve seen, once on a burro’s lower front leg and once on a cat’s hind foot).

It got bad enough that I was within hours of going to the emergency room. Not that I expected them to be able to do much about it, but….

Then, finally, the swelling started to subside. I’d gone to bed around four a.m. (I write all night, every night), knowing that I had to be back up at nine that day. If the elbow wasn’t looking any better by nine, I’d have to go consult the hated M.D.’s at the hospital, since I don’t have a regular doctor (nor want one).

I was up by eight, and the swelling was down just a touch. Likewise, the area of obvious inflammation (reddened area) had shrunk slightly.

Tonight, there’s no evidence of that particular bite left except for a tiny red dot that hasn’t quite finished disappearing. The healing process took a good three weeks to get to this point. The bite on my inner thigh is itching and burning, but I can live with it; the bite on my butt is mostly itching.

For the moment, my southern Arizona chigger bites have deescalated from dangerous back to nuisance, our friends the coyotes are singing their night songs outside, and life is good.

24 thoughts on “When Chigger Bites Escalate from Nuisance to Dangerous

  1. Thank you.
    Very well said.
    I needed to hear that cause I’ve been freaking out not knowing what it was.
    After I read your post I now know that it is chigger bites.
    Same thing for me.
    Recently went by my dad’s house in OK black berry patches.
    Thanks again.

  2. You’re extremely welcome. I really enjoy a lot of things about our southern Arizona homestead, but if it weren’t for my wife’s health situation (her arthritis does not do well in colder climates and her medical practitioner here is super awesome), I’d be looking seriously at heading back north to Montana. The chiggers “only” nail me for three or four months out of every twelve, but that’s enough and then some.

  3. My hubby has them now. Tucson Arizona seems to be full of them. Spent a few hours in urgent care and he is now on antibiotics, Benadryl, and cortisone creams. Thanks for your help.

  4. Whoa. Haven’t had to hit Urgent Care yet; there is that. But I can really understand how it could get to that point; chiggers are NOT our friends. 🙂

  5. Thank you Ghost Writer for the informative, gross but well written article about this. I will tell my husband that he is right, he was not hallucinating imaginary bites on his lower extremities.

  6. Thanks for commenting, Laura. Your remarks made me chuckle for two reasons: Yes, the info could certainly be seen as gross, and also, any wife telling her husband he is right about something should be good for more than half of the standup comedy routines on the planet. 🙂

  7. Question: Do chigger bites re-infect? I have some (6) that are at least a month old. Just when I thought they were gone, one by one they seem to be acting up again with itching… Thanks for an answer. Is just putting anti-itch cream on them and riding it out the answer??

  8. Bonny, all I can say is based on my personal experience–and I go against all “accepted protocol” when it comes to chiggers. Most websites out there say yes, just use the anti-itch cream and wait, and never scratch. Well, I don’t care to go that route, so I rip out the scabby stuff with a fingernail and then spray the dickens out of the wound with one of those antiseptic/numbing aerosols you get from Walgreens or wherever. (Used to get some from Walmart, but our local store started stocking nothing but anti-sunburn stuff that has no germ killing antiseptic in it, so we’re done with that.)

    To repeat, what I do is NOT recommended, so please keep that in mind. I will say that my “attack mode” has never seen one re-infect as such, though some of them do take several weeks to heal completely. My thinking is that we need to remember we’re talking about jumbles of dissolved or semi-dissolved skin, all of which has to go away (either by falling off or, in my case, by fingernail attack), and all of the missing skin has to “fill back in” before it’s really over.

    Hope this helps, though I’m none too sure that it does. 🙂

  9. Thank you for writing this article. I was born and raised in S. Ga and now live right outside of Oklahoma City, Oklahoma. Until this past weekend at Broken Bow, Oklahoma on the Lower Mountain Fork River, I had never had a chigger bite! Now, I have numerous ones on my legs, a few on my arms, etc. I had no clue what bit me. They itch ferociously and one even looked more like a tick bite like your photo and itches like crazy. I am currently attempting to be patient with it and hoping that they go away soon.
    I do not care much for those little suckers…and will use some spray or something next year when we go.

  10. Thanks for commenting, Angela–and sorry to hear about your bites. I seriously do NOT appreciate chiggers, for anyone!

    One suggestion: To ease the healing process, the best thing we’ve found so far is a product called Chigger X. It’s available at our Walmart and on Amazon, a little white container of creamy ointment. Container has a red cap. 2016 is the first year I’ve used it. Won’t get caught without it again.

  11. What a wonderful blog article. I also have a new allergy and, based on your description, it is chiggers! You have saved me a trip to an allergy specialist. I have been to my primary care doc and to the ER and both diagnosed some sort of “bug or spider bites.” I have been bitten in Phoenix (back yard), Payson, Tucson, and Yuma. Thanks for taking the time to write this!

  12. Heck, thank YOU for taking the time to comment, Lu Ann! It’s much appreciated–and I’m really glad to hear the post was able to help you diagnose yourself. The difference (degradation) between the doctors of my youth (1940’s and 1950’s) and those of today…there is no measurement. When I was six, at the end of a flu sickness one winter, I went out in the snow, excited to see my Dad bringing in a heard of horses. I hiked thataway to “help turn the herd” toward the corrals (not that Dad needed help)…and pitched face down in the snow, unconscious. Woke up on the couch in the house. A few days later, Dad drove me to our family doctor, some 43 miles distant. Doc Benjamin took one look into my eyes and said, “This boy’s had a heart attack.” He knew; he didn’t need all the fancy cost-you-an-arm-and-a-leg high tech tests they insist upon today because they don’t know squat without them or are afraid of getting sued even if they do know.

    Had Doc Benjamin been practicing in southern Arizona, I’m pretty sure he would have asked a few questions like, “Have you been slogging around in the grass much?” Maybe taken a fingernail to identify the telltale crust of the bite tower. And then said, “Chiggers.” Total fee (in, say, 1940) $15 to $25, and out the door you go, diagnosis done.

  13. In 1976 after my husband and I moved to Montgomery County Texas, we found we had itchy bites all over our legs. Interestingly, our bites did not look at all alike.
    We went to a local doctor who was new in the area. He was baffled and called in his nurse who took one look and declared “chiggers.” In the following years I have suffered from chigger bites in many states. If there is one chigger in an area, it will find me. My husband is seldom bothered.
    We now live in the Globe area (Gila County) of Arizona. I thought I had chigger bites in the past few years but people here had never heard of chiggers. But this year the monsoon rains were particularly fierce. Vegetation is thriving and apparently so are those pesky little bugs. I have welts on my elbows, arms and fingers. In previous years it was only a few bites. Today I am an itchy mess. I find the Epsom salts bath helps and I also have gel, spray, and itch relief sticks, but none of them is helping much today. I know now to keep out of the grass when I walk my dogs, plus I am going to Walmart for some Chigger-X ointment. I sure hope it gives me some relief.

  14. J.H., I sure hope it gives you some relief, too. Chigger bits are to be taken seriously, in my experience. Thankfully, I seem to have finally solved the problem long term–by moving out of Arizona and back to my old stomping grounds in Montana! I’ll take the lower temperatures and winter snow any day.

    Not that the chiggers were the only factor contributing to the decision to move, but they were certainly one downside I was more than happy to leave behind.

  15. Hi,
    I see that this post is from quite a while back, but I’ve just encountered what I think are likely chiggers for the first time. I’m still not 100% sure because from what I’ve read online, it seems like you basically get bitten and just wait it out for a week or so until the itching dies down. I got bitten on a hiking trip, but I’ve been back now for almost 2 weeks, and I have been getting new bites even after being back home in a metropolitan area without contact with vegetation where chiggers might be residing. In your experience with chiggers, do they continue to bite for this long?

    Thanks so much for sharing your experiences!

  16. Mel, that does not sound like a chigger scenario, at least in my personal experience. I’ve never known for a chigger to wait two weeks to chow down. The bite has always shown up within 24 hours of exposure.

    There are other bugs out there that could produce ongoing, delayed bites, bird mites from a recently abandoned bird nest being one example. It takes a bird mite population a few weeks to die out. The mites can’t reproduce without bird hosts, so they do disappear eventually, though not quick-like-a-bunny. But I’m not an expert regarding everything out there. Not by a long shot. I grew up in Montana (and am now living there again, as the southern Arizona desert was not doing me any long term favors), where the main bugs we had to consider were mosquitoes and ticks.

    There is one problem I’ve never resolved: From time to time, I’ve come across critters the Internet “experts” claim cannot possibly be where I’ve found them, or even possibly exist. Example: When I was three years old, my parents found a huge black sheep tick burrowed deeply into the back of my neck, near the base of the skull, under the hairline. I’d had no idea it was there. We lived on a western Montana ranch and both parents were skilled in taking care of minor medical problems, but they opted (wisely) to have that particular tick surgically removed by the family doctor. (Most likely, Mom told Dad, “You’re not cutting on our son’s neck!” Nor would he have wanted to, despite being skilled with a castrating knife….) I got to see the tick–whether through the use of two mirrors or after it was removed, my memory is unclear. Man, that thing was huge, and jet black from stem to stern. Yet a Google search for “sheep tick” turns up something entirely different and not indigenous to Montana. Next time I need to order prescription cat food from our local veterinarian, I’m going to have to ask about that. “Sheep tick” is common parlance around here; the vet can undoubtedly tell me more about it.

  17. Hi again,

    Thank you so much for your reply! After realizing it couldn’t be chiggers, I’ve concluded that it must be rat mites (which seem to be really similar to bird mites). Our apartment building had a mouse problem in the recent months, and I think that that must have introduced rat mites into the building as well. I think we will just try to clean up all of our stuff and then actually move out of the apartment, as it doesn’t seem like the mouse issue is one that is going to be easily dealt with.

    Thanks again!

  18. Ah! Wow. I’ve never had to deal with rat mites, though on the ranch where I grew up (in a log house), we always had to trap mice and once, when I was quite young, I watched my dad shoot a packrat off the back wall where it was running along a log. I also had to deal with red bed lice at one point; dad had bought a used mattress for my room and the critters came with. I didn’t get away from that problem till I left home entirely.

  19. Thank you for sharing. I had a recent experience with bites marks as you described. The thing is the garden at home is fairly unkept, and one of our pets was left to roam in the tall grass, which wasn’t a good idea. Now I’m gonna buy permethrin body cream and anti-mites to clean the house.

  20. Thanks for commenting, John. These bites are never fun. Fortunately for us, we had indoors-only cats when we lived at the Border Fort in Arizona (left there in May of 2017), so no pets in the grass. Except on the rare occasion when Kitten Precious would sneak past us for a few minutes of freedom and the one time Gato got out and disappeared for 3 weeks, that is. 😀

  21. I like reading so many different perspectives. I’m from AR- lived in every region of the state- and always run into chiggers. They love me and I’m very allergic. I usually end up on antibiotics for infection where I scratched or my jeans rubbed bites. Chiggers can relocate on your body. They usually fall off after a few days, but unless you seal them in, suffocating them, they can move to other areas and start new bites. In AR we use Chigger Rid( from CVS or Walgreens) or its equivalent, clear nail polish, to seal each bite so that no new ones arrive and the chigger is killed. Then you bathe and the polish should peel right off. Put ointment and anti itch on the bite and you’re good. Shortens the time the chigger actively feeds.

  22. Thanks for commenting, Jess. Arkansas has to be chigger heaven for sure. Never realized they could “relocate on your body.” That’s pretty significant information, as is the part about “sealing them in.” Which I’m not sure I could make myself do, logical and effective or not.

Leave a Reply

Your email address will not be published.