Why Are My Mosquito Bites Only Behind My Knee?

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A user reported experiencing multiple itchy bites on the back of their knee after sitting outside for several hours, despite wearing long pants and using a mosquito candle. The bites were clustered and resembled mosquito bites, leading to speculation about their origin. Various potential culprits were discussed, including spiders, fleas, chiggers, and even heat-related reactions. Some participants suggested that the bites could have come from something already in the pants before wearing them, while others noted the possibility of a delayed reaction from an insect bite. The conversation also touched on past similar experiences and the need for vigilance against pests in clothing and living spaces. Ultimately, the exact source of the bites remained uncertain, with various theories offered but no definitive conclusion reached.
  • #31
Update:

Have not been outside at all tonight, and am not wearing the same pants as before. Have been sitting here on the couch in the living room for the last few hours, minding my own business.

I now have a small grouping of bites on my right thigh.

As I now recall, in the 2008 incident, the couch was the prime suspect.
 
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  • #32
DaveC426913 said:
Update:

Have not been outside at all tonight, and am not wearing the same pants as before. Have been sitting here on the couch in the living room for the last few hours, minding my own business.

I now have a small grouping of bites on my right thigh.

As I now recall, in the 2008 incident, the couch was the prime suspect.

7APEW.jpg
 
  • #33
damn. when sitting outside and there are bugs, i just fart to keep em away haha!
 
  • #34
haha. Way to make a good first impression stink. :rolleyes:
 
  • #35
DaveC426913 said:
Well, then they waited around for 12 hours before biting.

It's not totally impossible; or it could be a delayed reaction, too (especially if they turn out to be bed bugs or fleas). I once had a wasp inside my undershirt which was content until about 5 hours later...

...I thought I was going to die.
 
  • #36
Maybe it's hives?
 
  • #37
DaveC426913 said:
Update:

Have not been outside at all tonight, and am not wearing the same pants as before. Have been sitting here on the couch in the living room for the last few hours, minding my own business.

I now have a small grouping of bites on my right thigh.

As I now recall, in the 2008 incident, the couch was the prime suspect.
Do you have a dog or cat? The mites responsible for causing sarcoptic mange may find living on your pet intolerable if you have used Front-Line or other similar treatments on your pet, and they WILL bite you. I visited a friend whose dog was suffering from mange earlier this summer and sat with the dog for a while (he's a pretty chummy mutt). By the time I got home, I noticed three mosquito-bite-like welts on the underside of my forearm, and they itched like crazy for days. They were pretty much gone in under a week, but were far more persistent than mosquito bites.

BTW, any place that has a population of fox, coyotes, etc will have these mites, and pets will bring them into your home from outside, even if they have been given flea/tick treatments.
 
  • #38
DaveC426913 said:
haha. Way to make a good first impression stink. :rolleyes:

haha thanx
 
  • #39
turbo-1 said:
Do you have a dog or cat? The mites responsible for causing sarcoptic mange may find living on your pet intolerable if you have used Front-Line or other similar treatments on your pet, and they WILL bite you. I visited a friend whose dog was suffering from mange earlier this summer and sat with the dog for a while (he's a pretty chummy mutt). By the time I got home, I noticed three mosquito-bite-like welts on the underside of my forearm, and they itched like crazy for days. They were pretty much gone in under a week, but were far more persistent than mosquito bites.

BTW, any place that has a population of fox, coyotes, etc will have these mites, and pets will bring them into your home from outside, even if they have been given flea/tick treatments.

The only pets I have would result in drowned fleas...
OK, unless you count the Roomba as well.


I hate to suggest it but frankly, both my chill'uns spend all their time at their gf's houses, who do have cats. And both were here that day.
 
  • #40
Downdate (opposite of an update):

The bites on my right thigh are nowhere near as itchy as the ones under my left knee. 12 hours later, I'm not even sure they're still there.

The bites under my knee have finally receded. Still a little swelling and itch, but both are down by about 80%. (Actually, that didn't take as long as I would have thought. It's been barely 4 days.)
 
  • #41
Dembadon said:
In https://www.physicsforums.com/showthread.php?t=262090" thread, which was created around the same time of the year (fall) about two years ago, you had a similar episode. Chemisttree thought they might be chiggers (post #15). Could this be a repeat occurrence? Were you able to verify if they were chiggers or not?

I was just thinking the same thing. Of course I remembered the post for some reason.
 
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  • #42
Are you sure that it isn't just heat-rash, Dave? Face it, dude, your thighs are bigger around than my entire body, and the back of the knees is one of the few holdouts wherein the sun never shines.

Just thinking out loud...
 

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